779 Area Code: Joliet, IL | Who Called, Map & Local Time

Who Called Me from Area Code 779?

Quick answerA 779 call usually comes from Joliet or nearby communities, but caller ID can be spoofed, so a local-looking number isn’t proof. If there’s no voicemail, let it go: legitimate callers leave messages.

No voicemail? Let it go. Real callers leave messages.
Recognize the pattern? Check the number in the prefix lookup.
Getting repeats? ActiveArmor® blocks and labels them automatically.
Same prefix calling again? Compare it against this month’s most-reported 779 prefixes, right on this page.
Curious who issued a number? Every 779 prefix belongs to a carrier — the registry names it.

Been targeted?Report the call at reportfraud.ftc.gov — reports feed the complaint data that powers spam blocking, including the board on this page. AT&T customers already have ActiveArmor® screening built in.

Most-reported 779 prefixes this month

PrefixReported patternReport volume

(779) 258-XXXXRobocall-heavy

(779) 202-XXXXRobocall-heavy

(779) 209-XXXXRobocall-heavy

(779) 269-XXXXRobocall-heavy

(779) 248-XXXXRobocall-heavy

66 unwanted-call reports naming 779 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.

Block spam calls in the 779, included with AT&T wireless

AT&T ActiveArmor® is the network-level security that screens the calls this page is about:

Fraud calls blocked automatically on the network
Suspected spam labeled before you answer
Caller ID & custom call blocking in the free app
Reverse number lookup (available with ActiveArmor Advanced security. Fee required.)
Identity monitoring & identity theft insurance (available with ActiveArmor Advanced security. Fee required.)

Included with AT&T wireless plans. Requires compatible device/service and download of the AT&T ActiveArmor® app. Other terms & restrictions apply. May not detect all threats and may block wanted calls. Some features require Advanced mobile security ($7/mo.). See terms.

See how ActiveArmor works Included with the free 30-day AT&T Wireless^℠ trial

Try AT&T Wireless^℠ free for 30 daysDownload the AT&T app, activate a trial eSIM in minutes, and run our network side by side with your current service. No credit card, keep your number.

100GB of data plus 25GB hotspot
Unlimited talk & text in the U.S., Canada and Mexico
Texting from the U.S. to 200+ countries & territories
Access to the AT&T 5G network

Start your free trialCompatible iPhone required. 5G requires a compatible plan and device; coverage not available everywhere. Terms & restrictions apply.

Offer details

Service good for 30 days. Data: Limited to 100GB of data and 25GB of hotspot data. No additional data is available after limit is reached. Video is limited to SD quality. Talk & Text: Includes unlimited talk & text within the U.S. and unlimited text from the U.S. to over 230 countries. Limits: One trial per user. An unlocked, dual eSIM iPhone is required. You’ll receive a trial phone number that belongs to AT&T and is not available to be ported to another carrier or otherwise retained. Trial plan features and details may differ from or be unavailable in other AT&T plans. U.S. only. All terms subject to change at any time.

Is Area Code 779 a Scam?

No. 779 is a legitimate Joliet area code.

It’s added to the 815 region in 2007 and serves Joliet and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.

The code is realAdded to the 815 region in 2007; 348 assigned carrier prefixes serve it today.

Spoofing happens“Neighbor spoofing” fakes local numbers. No voicemail? Let it go.

Screening includedActiveArmor® labels and blocks suspected spam. Included with AT&T wireless plans.

Been targeted? Report it to the FTC at reportfraud.ftc.gov. Reports feed the complaint data that powers spam blocking.

Scam texts from area code 779 numbers

The most common area code 779 text scam is the “wrong number” opener: a friendly message that pretends to know you, then moves the chat to WhatsApp and eventually to an investment pitch. Scripts currently circulating:

“U at home?” · “Are you busy tomorrow?” · “How are you doing?”
Delivery-problem and job-offer texts that link out to a login page

Don’t reply. A response marks your number as live. Forward scam texts to 7726 (SPAM), and AT&T ActiveArmor® filters known senders automatically.

How number spoofing works in area code 779

Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 779 number isn’t involved and usually has no idea. That’s why blocking one number rarely stops the calls.

A call from a number almost identical to yours (same 779 and prefix) is “mirror spoofing.” A missed call from your own number is never worth returning.
Strangers calling you back saying you called them? Your 779 number is being spoofed. It typically passes within days, and you don’t need a new number. Report it at reportfraud.ftc.gov.
The caller-ID checkmark: AT&T verifies network calls (STIR/SHAKEN). A verified mark means the displayed number wasn’t faked. No mark doesn’t always mean scam, but treat it with more caution.

Spoofed or not, the rule holds: unexpected caller, no voicemail? Let it go.

779 Area Code Prefix & Carrier Lookup

The three digits after the area code identify the carrier a number was issued to. All 348 assigned 779 prefixes below are real, from the public numbering registry. Type to filter.

This isn’t a reverse phone lookup: no legitimate free service can tell you who owns a specific number. What a 779 prefix does show: the carrier that issued it, whether it’s wireless, landline or VoIP, and the community it belongs to, which is often enough to judge whether a call was worth returning.

348 prefixes · updated monthly

Prefix	Carrier	Line type
779-200	Verizon Wireless	Wireless
779-201	Verizon Wireless	Wireless
779-202	AT&T (Teleport Communications)	Landline
779-203	Lumen (Level 3)	VoIP
779-204	Onvoy (Sinch)	VoIP
779-205	AT&T Mobility	Wireless
779-206	Verizon Wireless	Wireless
779-207	Verizon Wireless	Wireless
779-208	Verizon Wireless	Wireless
779-209	Peerless Network	VoIP
779-210	At&T Enterprises	Landline
779-212	Nuso	Landline
779-213	Peerless Network	VoIP
779-214	Mediacom Telephony Of Illinois	Landline
779-215	Ip Horizon	Landline
779-216	Peerless Network	VoIP
779-217	Boost Mobile	Landline
779-218	Peerless Network	VoIP
779-219	Commio	Landline
779-220	Bandwidth.com	VoIP
779-221	Onvoy (Sinch)	VoIP
779-222	Telnyx	Landline
779-223	Onvoy (Sinch)	VoIP
779-224	AT&T Mobility	Wireless
779-225	Verizon Wireless	Wireless
779-226	Comcast (Xfinity Voice)	VoIP
779-227	Metro by T-Mobile (MetroPCS)	Wireless
779-228	Peerless Network	VoIP
779-229	Comcast (Xfinity Voice)	VoIP
779-230	AT&T Mobility	Wireless
779-231	Verizon Business (MCImetro)	Landline
779-232	AT&T (Teleport Communications)	Landline
779-233	T-Mobile	Wireless
779-234	Bandwidth.com	VoIP
779-235	At&T Enterprises	Landline
779-236	T-Mobile	Wireless
779-237	Verizon Wireless	Wireless
779-238	T-Mobile	Wireless
779-239	AT&T Mobility	Wireless
779-240	T-Mobile	Wireless
779-241	T-Mobile	Wireless
779-242	AT&T Mobility	Wireless
779-243	AT&T Mobility	Wireless
779-244	AT&T Mobility	Wireless
779-245	T-Mobile	Wireless
779-246	AT&T (Teleport Communications)	Landline
779-247	Verizon Wireless	Wireless
779-248	Lumen (CenturyLink)	Landline
779-249	Verizon Wireless	Wireless
779-250	T-Mobile	Wireless
779-251	Lumen (CenturyLink)	Landline
779-252	Onvoy (Sinch)	VoIP
779-253	Telnyx	Landline
779-254	Comcast (Xfinity Voice)	VoIP
779-255	Onvoy (Sinch)	VoIP
779-256	Vonage	VoIP
779-257	Bandwidth.com	VoIP
779-258	Onvoy (Sinch)	VoIP
779-259	Onvoy (Sinch)	VoIP
779-260	AT&T Mobility	Wireless
779-261	Onvoy Spectrum (Sinch)	VoIP
779-262	Onvoy (Sinch)	VoIP
779-263	AT&T (Teleport Communications)	Landline
779-264	AT&T Mobility	Wireless
779-265	Lumen (Level 3)	VoIP
779-266	Telnyx	Landline
779-267	AT&T Mobility	Wireless
779-268	AT&T (Teleport Communications)	Landline
779-269	Verizon Business (MCImetro)	Landline
779-270	Verizon Business (MCImetro)	Landline
779-271	Csc Wireless	Wireless
779-272	Peerless Network	VoIP
779-273	Onvoy (Sinch)	VoIP
779-274	Csc Wireless	Wireless
779-275	Stratus Networks	Landline
779-276	Stratus Networks	Landline
779-277	Telnyx	Landline
779-278	Stratus Networks	Landline
779-279	AT&T Mobility	Wireless
779-280	Stratus Networks	Landline
779-281	Onvoy (Sinch)	VoIP
779-282	Stratus Networks	Landline
779-283	Stratus Networks	Landline
779-284	Stratus Networks	Landline
779-285	Stratus Networks	Landline
779-286	Stratus Networks	Landline
779-287	Onvoy (Sinch)	VoIP
779-288	Onvoy (Sinch)	VoIP
779-289	Nuso	Landline
779-290	Stratus Networks	Landline
779-291	Stratus Networks	Landline
779-292	Stratus Networks	Landline
779-293	Stratus Networks	Landline
779-294	Stratus Networks	Landline
779-295	Stratus Networks	Landline
779-296	Stratus Networks	Landline
779-297	Ip Horizon	Landline
779-298	Ip Horizon	Landline
779-299	Stratus Networks	Landline
779-300	T-Mobile	Wireless
779-301	T-Mobile	Wireless
779-302	Verizon Wireless	Wireless
779-303	Telnyx	Landline
779-304	Stratus Networks	Landline
779-305	Stratus Networks	Landline
779-306	Stratus Networks	Landline
779-307	Stratus Networks	Landline
779-308	Stratus Networks	Landline
779-309	Boost Mobile	Landline
779-310	Stratus Networks	Landline
779-312	Verizon Wireless	Wireless
779-313	Stratus Networks	Landline
779-314	Stratus Networks	Landline
779-315	Stratus Networks	Landline
779-316	Stratus Networks	Landline
779-317	Stratus Networks	Landline
779-318	Stratus Networks	Landline
779-319	Stratus Networks	Landline
779-320	Stratus Networks	Landline
779-321	Stratus Networks	Landline
779-322	Stratus Networks	Landline
779-323	Ip Horizon	Landline
779-324	Bandwidth.com	VoIP
779-325	Stratus Networks	Landline
779-326	Stratus Networks	Landline
779-327	Onvoy (Sinch)	VoIP
779-328	Onvoy (Sinch)	VoIP
779-329	T-Mobile	Wireless
779-330	Nuso	Landline
779-331	AT&T Mobility	Wireless
779-332	Onvoy (Sinch)	VoIP
779-333	Onvoy (Sinch)	VoIP
779-334	Lumen (Level 3)	VoIP
779-335	Telnyx	Landline
779-336	FracTEL	Landline
779-337	Onvoy (Sinch)	VoIP
779-338	Onvoy (Sinch)	VoIP
779-339	AT&T Mobility	Wireless
779-340	Bandwidth.com	VoIP
779-341	AT&T Mobility	Wireless
779-342	Onvoy (Sinch)	VoIP
779-343	Onvoy (Sinch)	VoIP
779-344	Onvoy (Sinch)	VoIP
779-345	FracTEL	Landline
779-346	FracTEL	Landline
779-347	Onvoy (Sinch)	VoIP
779-348	AT&T (Teleport Communications)	Landline
779-349	T-Mobile	Wireless
779-350	AT&T Mobility	Wireless
779-351	Windstream (Paetec)	Landline
779-352	Twilio	VoIP
779-353	Lumen (Level 3)	VoIP
779-354	Lumen (Level 3)	VoIP
779-355	Lumen (Level 3)	VoIP
779-356	FracTEL	Landline
779-357	AT&T Mobility	Wireless
779-358	Bandwidth.com	VoIP
779-359	Nuso	Landline
779-360	AT&T Mobility	Wireless
779-361	Verizon Wireless	Wireless
779-362	Onvoy (Sinch)	VoIP
779-363	Nuso	Landline
779-364	Nuso	Landline
779-365	Nuso	Landline
779-366	Hd Carrier	Landline
779-367	Nuso	Landline
779-368	Comcast (Xfinity Voice)	VoIP
779-369	AT&T Mobility	Wireless
779-370	Boost Mobile	Landline
779-371	AT&T Mobility	Wireless
779-372	T-Mobile	Wireless
779-373	Callworks Corporation	Landline
779-374	Verizon Wireless	Wireless
779-375	AT&T Mobility	Wireless
779-376	Commio	Landline
779-377	Skye Telecom LLC dba Skyetel	Landline
779-378	Onvoy (Sinch)	VoIP
779-379	AT&T Mobility	Wireless
779-380	AT&T Mobility	Wireless
779-381	Verizon Wireless	Wireless
779-382	Spectrum (Charter IP)	Landline
779-383	AT&T Mobility	Wireless
779-384	T-Mobile	Wireless
779-385	AT&T Mobility	Wireless
779-386	T-Mobile	Wireless
779-387	Onvoy (Sinch)	VoIP
779-388	Onvoy Spectrum (Sinch)	VoIP
779-389	Onvoy (Sinch)	VoIP
779-390	T-Mobile	Wireless
779-391	Onvoy Spectrum (Sinch)	VoIP
779-392	Onvoy Spectrum (Sinch)	VoIP
779-393	Onvoy Spectrum (Sinch)	VoIP
779-394	Onvoy Spectrum (Sinch)	VoIP
779-395	Onvoy (Sinch)	VoIP
779-396	Verizon Wireless	Wireless
779-397	Onvoy Spectrum (Sinch)	VoIP
779-398	Onvoy (Sinch)	VoIP
779-399	FracTEL	Landline
779-400	Ymax Communications	Landline
779-401	AT&T Mobility	Wireless
779-402	AT&T Mobility	Wireless
779-403	T-Mobile	Wireless
779-404	Onvoy (Sinch)	VoIP
779-405	Leap Telecom	Landline
779-406	AT&T Mobility	Wireless
779-407	AT&T Mobility	Wireless
779-408	Verizon Wireless	Wireless
779-409	Metro by T-Mobile (MetroPCS)	Wireless
779-410	Twilio	VoIP
779-412	AT&T Mobility	Wireless
779-413	United States Cellular	Wireless
779-414	United States Cellular	Wireless
779-415	United States Cellular	Wireless
779-416	United States Cellular	Wireless
779-417	United States Cellular	Wireless
779-418	United States Cellular	Wireless
779-419	United States Cellular	Wireless
779-420	United States Cellular	Wireless
779-421	United States Cellular	Wireless
779-422	Verizon Wireless	Wireless
779-423	Comcast (Xfinity Voice)	VoIP
779-424	Bandwidth.com	VoIP
779-425	At&T Enterprises	Landline
779-426	Ton80 Communications	Landline
779-427	AT&T Mobility	Wireless
779-428	Wavenation	Landline
779-429	At&T Enterprises	Landline
779-430	Wavenation	Landline
779-431	T-Mobile	Wireless
779-432	Mtco Communications	Landline
779-433	Bandwidth.com	VoIP
779-434	AT&T Mobility	Wireless
779-435	AT&T Midwest (Illinois Bell)	Landline
779-436	T-Mobile	Wireless
779-437	AT&T Mobility	Wireless
779-438	AT&T Mobility	Wireless
779-439	Verizon Wireless	Wireless
779-440	AT&T Mobility	Wireless
779-441	AT&T Mobility	Wireless
779-442	AT&T Mobility	Wireless
779-443	Comcast (Xfinity Voice)	VoIP
779-444	Bandwidth.com	VoIP
779-445	Metro by T-Mobile (MetroPCS)	Wireless
779-446	At&T Enterprises	Landline
779-447	AT&T Mobility	Wireless
779-448	AT&T Mobility	Wireless
779-452	Ahoi	Landline
779-456	T-Mobile	Wireless
779-463	Ton80 Communications	Landline
779-465	FracTEL	Landline
779-466	Ton80 Communications	Landline
779-475	Spectrum (Charter IP)	Landline
779-479	Onvoy (Sinch)	VoIP
779-499	Skye Telecom LLC dba Skyetel	Landline
779-500	AT&T (Teleport Communications)	Landline
779-513	Lumen (CenturyLink)	Landline
779-529	Bandwidth.com	VoIP
779-537	Verizon Wireless	Wireless
779-545	Comcast (Xfinity Voice)	VoIP
779-548	Bandwidth.com	VoIP
779-552	Digital Network Access Communications	Landline
779-577	Skye Telecom LLC dba Skyetel	Landline
779-579	Onvoy (Sinch)	VoIP
779-587	Ahoi	Landline
779-599	FracTEL	Landline
779-600	FracTEL	Landline
779-601	Bandwidth.com	VoIP
779-624	Ton80 Communications	Landline
779-625	Ton80 Communications	Landline
779-639	Ton80 Communications	Landline
779-666	Onvoy (Sinch)	VoIP
779-675	Ton80 Communications	Landline
779-677	FracTEL	Landline
779-678	FracTEL	Landline
779-679	Onvoy (Sinch)	VoIP
779-696	Windstream (Paetec)	Landline
779-699	FracTEL	Landline
779-701	Bandwidth.com	VoIP
779-702	T-Mobile	Wireless
779-703	T-Mobile	Wireless
779-704	Verizon Business (MCImetro)	Landline
779-706	Verizon Wireless	Wireless
779-707	Bandwidth.com	VoIP
779-710	Onvoy (Sinch)	VoIP
779-713	T-Mobile	Wireless
779-717	Peerless Network	VoIP
779-722	FracTEL	Landline
779-729	Onvoy (Sinch)	VoIP
779-732	FracTEL	Landline
779-739	Twilio	VoIP
779-746	Ton80 Communications	Landline
779-749	Onvoy (Sinch)	VoIP
779-758	FracTEL	Landline
779-759	Onvoy (Sinch)	VoIP
779-766	FracTEL	Landline
779-770	AT&T Mobility	Wireless
779-771	AT&T Mobility	Wireless
779-772	AT&T Mobility	Wireless
779-774	Onvoy (Sinch)	VoIP
779-775	Skye Telecom LLC dba Skyetel	Landline
779-777	AT&T Mobility	Wireless
779-778	Onvoy (Sinch)	VoIP
779-779	Onvoy (Sinch)	VoIP
779-780	T-Mobile	Wireless
779-783	Ton80 Communications	Landline
779-788	FracTEL	Landline
779-789	Onvoy (Sinch)	VoIP
779-790	Commio	Landline
779-797	Terra Nova Telecom	Landline
779-799	FracTEL	Landline
779-800	Onvoy (Sinch)	VoIP
779-801	AT&T (Teleport Communications)	Landline
779-803	Bandwidth.com	VoIP
779-804	Verizon Business (MCImetro)	Landline
779-809	Metro by T-Mobile (MetroPCS)	Wireless
779-832	Ton80 Communications	Landline
779-837	Ton80 Communications	Landline
779-855	Terra Nova Telecom	Landline
779-861	Verizon Wireless	Wireless
779-867	Commio	Landline
779-875	T-Mobile	Wireless
779-877	FracTEL	Landline
779-879	Onvoy (Sinch)	VoIP
779-888	Onvoy (Sinch)	VoIP
779-895	Twilio	VoIP
779-899	FracTEL	Landline
779-900	FracTEL	Landline
779-901	Bandwidth.com	VoIP
779-902	Onvoy Spectrum (Sinch)	VoIP
779-903	Onvoy (Sinch)	VoIP
779-904	Onvoy Spectrum (Sinch)	VoIP
779-910	Onvoy (Sinch)	VoIP
779-915	T-Mobile	Wireless
779-922	FracTEL	Landline
779-927	Ton80 Communications	Landline
779-931	Frontier Communications	Landline
779-933	FracTEL	Landline
779-939	AT&T Mobility	Wireless
779-946	FracTEL	Landline
779-970	Verizon Wireless	Wireless
779-977	FracTEL	Landline
779-978	United States Cellular	Wireless
779-979	Onvoy (Sinch)	VoIP
779-990	Commio	Landline
779-991	Onvoy (Sinch)	VoIP
779-994	Peerless Network	VoIP
779-997	Ton80 Communications	Landline
779-999	Peerless Network	VoIP

Line type reflects the registry assignment; ported numbers can differ. Unknown 779 number calling? ActiveArmor® screens it before you ever look it up.

Cities & Communities in and around Area Code 779

Communities the 779 serves, filtered against the numbering registry’s rate centers, with each community’s key ZIP codes and the AT&T home internet available there. Cities link to their local AT&T internet page.

City / community	Key ZIP codes	AT&T internet
Belvidere	61008, 61112, 61016	Internet Air
Custer Park	60481, 60408, 60935	Check address
Genoa	60135, 60145, 60178	Internet Air
Joliet	60431, 60436, 60435	Fiber up to 5 GIG
Rockford	61104, 61108, 61107	Internet Air
Sheffield	61361, 61314, 61345	Internet Air
Wilmington	62078, 62610, 62092	Internet Air

City list: AT&T service-area records and the public numbering registry. Key ZIPs: U.S. Census data for each community. Internet type: AT&T eligibility data, June 2026. Availability is always confirmed at your exact address.

779 Area Code Map

Area code 779 serves Joliet and nearby communities in IL.

Map of area code 779 coverage in Illinois

↓ Printable PDF

Open the printable 779 map (PDF) · All Illinois area codes · Home internet in Joliet

Counties Covered by the 779 Area Code

Will County

Share of combined population65%

Population696,355

Largest 779 cityCuster Park

Kendall County

Share of combined population12%

Population131,869

Largest 779 cityJoliet

DeKalb County

Share of combined population9%

Population100,420

Largest 779 cityGenoa

Boone County

Share of combined population5%

Population53,448

Largest 779 cityBelvidere

Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 779 also reaches parts of Ogle County, Bureau County, Greene County.

The 779, explained

Area Code 779: More Than a Number in Joliet

In Joliet, the 779 is more than digits on a caller ID. It arrived in 2007, layered onto the 815 region, and it has meant Joliet and surrounding communities ever since — 348 carrier prefixes keep its lines busy today, and an established 779 number still says you’ve been here a while.

The map tells its own story: Joliet and surrounding communities, with 815 sharing the same streets today. Several codes, one local calling area, no long-distance between any of them — only the 779 came first.

Keeping a 779 matters here. An existing 779 number ports to a new phone, a new carrier, or a new AT&T line, and stays yours anywhere in the U.S. New lines in the area often draw 815 instead — one more reason locals hold on to theirs.

Need a new local number? Shop plans Keep your 779: bring it to AT&T

Internet, wireless & stores in the 779

AT&T Home Internet in Area Code 779

AT&T home internet serves communities across area code 779, with AT&T Fiber where it’s built and AT&T Internet Air covering the gaps. Availability is decided address by address; every community in the table above links to its local internet page.

No data capsNo annual contractNo equipment fees

AT&T Fiber: Ltd. avail/areas. Speeds based on wired connection. Actual speeds vary. For 5-GIG, single device wired speed maximum 4.7Gbps. For more info., visit att.com/speed101. AT&T Internet Air: AT&T Internet Air not available in all areas. In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a minimum of 30 min.

Check availability at your address Home internet in Joliet ›

Pair it with wireless in an internet + wireless bundle. Run a business in the 779? AT&T Business Internet is available at many addresses.

Family streaming together on AT&T home internet

Fiber install day in the 779Check your address ›

Moving to Area Code 779?

Set up home internet in area code 779 before the boxes arrive, and find your new community in the table above or check your exact address below.

Your number moves with you: port your 779 number from anywhere, or keep your old number when you arrive. An AT&T store nearby can handle the whole switch in one visit.

1 · Check your addressSee Fiber or Internet Air availability in seconds.

2 · Schedule for move-in dayInstall lined up before the boxes arrive.

3 · Keep your numberYour mobile number ports; your internet moves.

Plan your move with AT&T

Couple setting up internet on a laptop among moving boxes

Get set up before move-in dayPlan your move ›

AT&T Wireless in Area Code 779

AT&T’s 5G network covers most of area code 779. ActiveArmor® spam blocking is included with every unlimited plan, your 779 number stays yours, and great cell phone deals in Joliet are a tap away.

5G across the 779ActiveArmor® includedKeep your 779 number

AT&T may temporarily slow data speeds if the network is busy. 5G req’s compatible plan & device. Coverage not available everywhere. Learn more at att.com/5Gforyou.

Shop wireless plans Bring your 779 number ›

Need a new 779 number? Ask when you activate a line: the 779 shares its territory with 815, so new lines may draw one of those codes, and porting an existing 779 number keeps it yours.

See the AT&T wireless coverage map for the 779 ›

Woman smiling at her phone on an Joliet street

Stay connected across JolietShop wireless plans ›

AT&T Stores in Area Code 779

Looking for cell phone stores in area code 779? These stores serve the 779 area — walk in for switching, porting, upgrades and hands-on help. (The 779 is new enough that most local stores still answer on longer-established numbers.)

Belvidere AT&T Store Belvidere 1942 Gateway Center Dr, Belvidere+1 815-604-6448

Joliet AT&T Store Louis Joliet Mall Store 3340 Mall Loop Dr, Joliet+1 815-230-6516

Joliet AT&T Store West Jefferson 1728 W Jefferson, Joliet+1 815-714-7400

Cell phone stores in Joliet › All 1 locations: company owned and authorized retailers

Every AT&T store in the region, company owned and authorized retailer alike, each with its own store page.

AT&T store employee helping a customer with her phone

Real help from real people in JolietFind your store ›

All AT&T Stores Serving the 779 Area

Every AT&T store serving the 779’s communities. Tap any number to call.

4 AT&T locations serving the 779 area

City	Store	Phone
Belvidere	AT&T Store Belvidere	+1 815-604-6448
Joliet	AT&T Store West Jefferson	+1 815-714-7400
Joliet	AT&T Store Louis Joliet Mall Store	+1 815-230-6516
Rockford	AT&T Store State Street Store	+1 815-230-6194

International Calling from Area Code 779

Calling abroad from area code 779? AT&T International Calling adds discounted or unlimited rates to 200+ countries on top of your existing plan, and unlimited texting from the U.S. to 200+ destinations is already included on AT&T unlimited plans.

Where the 779 calls most:MexicoIndiaPolandPhilippinesChina

Top places of birth among foreign-born residents of the 779’s counties, U.S. Census Bureau ACS 2023.

Calling abroad from a 779 number: dial 011 + country code + number (or just + on a mobile). Traveling abroad instead? International Day Pass® takes your talk, text and data with you for a flat daily rate.

International Calling and International Day Pass® availability, rates and included destinations vary by plan; see att.com for the current country list.

See international calling plans

Father and son waving during a video call with family abroad

Joliet calls the worldSee international plans ›

779 Area Code Quick Facts & Dialing

StateIllinois

Time zoneCentral

Overlays815share this territory

Established2007added to the 815 region

Dialing10 digitsrequired

Toll-free?Nogeographic code

Population1.08Mcounties served, Census 2023

Largest cityJoliet+6 more ›

How to dial a 779 number

Scenario	Format	Example
Local call (within the region)	779 + 7-digit number	(779) 555-0100
Long distance (within the U.S.)	1 + 779 + 7-digit number	1 (779) 555-0100
Calling 779 from another country	+1 779 + 7-digit number	+1 779 555 0100
From a mobile phone	(779) + 7-digit number	(779) 555-0100

A Short History of Area Code 779

Added in 2007 to the 815 region, the 779 serves Joliet and surrounding communities. No splits or overlays have divided its territory since.

2007Added to the 815 region

In service since 2007. Today the 779’s territory is shared with overlay code 815, so ten-digit dialing is required.

Nearby & Related Area Codes

815Overlay 331Also Illinois 630Also Illinois 847Also Illinois 224Also Illinois

Browse area codes by state: Illinois (17) · California (41) · Texas (29) · Florida (23) · all 50 states ›

Area Code 779 FAQ

What area code is 779?

779 is the area code for Joliet, Illinois and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.

Where is area code 779?

Area code 779 serves Joliet, Illinois and nearby communities including Custer Park, Genoa, Joliet. The full city list is in the cities table above.

Why did I get a text message from a 779 number?

The most common 779 text scam opens like a wrong number (“u at home?”, “are you busy tomorrow?”) and tries to move you to WhatsApp. Don’t reply. Forward the text to 7726 (SPAM) and delete it. AT&T ActiveArmor® filters known scam senders automatically.

Who called me from area code 779?

A 779 number usually means Joliet or a nearby community, but spoofing is common. This page’s prefix lookup isn’t a reverse phone lookup — it can’t name the caller, but it shows the carrier, line type and community a number was issued to, which is often enough to judge a call.

What time zone is area code 779?

Central time. The live local time is shown at the top of this page.

Why am I getting calls from 779 numbers?

779 is an active, legitimate Illinois area code, but scammers spoof local numbers because people answer them. If there’s no voicemail, let it go. AT&T ActiveArmor® blocks and labels spam automatically, and you can report unwanted calls at reportfraud.ftc.gov. The spam report board above shows which 779 prefixes are drawing complaints right now.

Is 779 a toll-free number?

No. 779 is a geographic area code tied to Joliet, Illinois. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.

What’s the difference between 779 and 815?

Nothing on the map: 779 is an overlay of 815, covering the same Joliet area. Calls between them are local; only the three digits at the front differ.

Which cities use area code 779?

The largest communities include Belvidere, Custer Park, Genoa, Joliet, Rockford. The full list is in the cities table above.

Does AT&T offer service in the 779?

Yes: home internet, wireless and retail stores across the 779. Availability is checked address by address.

Can I still get a 779 number?

Yes. Carriers in Joliet and across the 779 still issue 779 numbers on new lines, and you can port an existing 779 number to any carrier. Newer lines in the same area may also receive numbers from an overlay code.

Can I keep my 779 number if I move?

Yes. Phone numbers are portable: your 779 number can move with you anywhere in the U.S., whether you stay with your carrier or switch.

Sources: city and store data from AT&T records; prefix and carrier assignments from the public numbering registry (pulled July 2026). Facts regenerate monthly.