The 920 area code covers Green Bay, Appleton and 116 more places in Wisconsin.
Area code 920 is in Wisconsin, on Central Time. In the 920 area, phone numbers are given out most in Brown County, then Outagamie and Winnebago counties. It has been in service since July 26, 1997. 274 covers the same area, so two neighbours can have different area codes.
- Where
- 8 counties in Wisconsin, mostly Brown County, Outagamie County and Winnebago County
- Time zone
- Central Time
- In service since
- July 26, 1997
- Shares its area with
- 274 (since 2023)
- Prefixes in use
- 785
- How to dial
- Local calls need all 10 digits: 920-555-0142.
Find out who called you from a 920 number.
Enter the full 10-digit number to see who it is listed to and the city and state on the listing. It is the same free check as our who called me lookup. To see only the caller ID name on the number, use our free CNAM lookup. To see whether it is a mobile, a landline or a VoIP line, use our free VoIP checker. To see which carrier a (920) number is on today, use our free carrier lookup.
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Green Bay holds 14% of the phone prefixes in area code 920.
A prefix is the three digits after the area code, and NANPA assigns each one to a town. Counting the 785 prefixes in use shows where 920 numbers are actually given out.
- Green Bay111 prefixes, 14%
- Appleton94 prefixes, 12%
- Oshkosh40 prefixes, 5%
- Fond Du Lac34 prefixes, 4%
- Sheboygan33 prefixes, 4%
- Manitowoc24 prefixes, 3%
- De Pere21 prefixes, 3%
- Neenah20 prefixes, 3%
Also served: Beaver Dam, Watertown, Sturgeon Bay and Fort Atkinson and 106 smaller places.
Wisconsin Bell (AT&T) holds the most phone number prefixes in area code 920: 141 of 785.
NANPA, which runs the North American numbering plan, assigns each prefix (the three digits after the area code) to one carrier. Here is how the 785 prefixes in use in 920 divide between carriers; holders this page does not name are grouped as other carriers.
| Carrier | Prefixes | Share |
|---|---|---|
| Wisconsin Bell (AT&T)AT&T's landline company | 141 | 18% |
| UScellularMobile network | 50 | 6% |
| Level 3 (Lumen)Lumen's business and wholesale network | 48 | 6% |
| AT&T MobilityMobile network | 45 | 6% |
| Charter (Spectrum)Cable company's phone service | 43 | 5% |
| FrontierLandline company | 42 | 5% |
| 46 other carriers | 416 | 53% |
77% of these prefixes are pooled, which means the blocks of 1,000 numbers inside them can belong to other carriers. Any number can also have been moved to another carrier since, so this shows who holds the prefixes, not who serves a given number.
Want the carrier of one exact number? Our free carrier lookup checks it, because numbers move between carriers.
Source: NANPA central office code assignments, October 1, 2026.
920 has been overlaid once since 1997.
1997
920 starts on July 26, 1997, split off from 414.
2023
On May 5, 2023, 274 is added on top of 920, so new numbers here can get either code.
A 920 number on your screen can still be a scam, because caller ID is easy to fake.
- Let an unknown call go to voicemail. A real caller leaves a message; a robocaller usually does not.
- Look the number up with the box above before you call back, because calling back tells a robocaller your line is live.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report unwanted robocalls at reportfraud.ftc.gov, or paste a suspicious message into our free scam checker.
The area codes closest to 920 are 414, 262 and 608.
This list measures the distance between the centres of each area, across state lines, and shows codes that share one area together.
Wisconsin has 7 other area codes.
These are the questions people ask most about area code 920.
Where is area code 920?
920 covers Green Bay, Appleton, Oshkosh and Fond Du Lac and 114 more places in Wisconsin. In the 920 area, phone numbers are given out most in Brown County, then Outagamie and Winnebago counties.
What state is area code 920 in?
Wisconsin. 920 is a Wisconsin area code on Central Time.
What cities use area code 920?
The places holding the most 920 prefixes are Green Bay, Appleton, Oshkosh, Fond Du Lac, Sheboygan, Manitowoc, De Pere and Neenah, out of 118 places in all. The count comes from NANPA's prefix assignments as of October 1, 2026.
Which phone company owns area code 920?
No single phone company owns 920. NANPA's records show Wisconsin Bell (AT&T) holds the most 920 prefixes, 141 of 785, followed by UScellular and Level 3 (Lumen). Numbers move between carriers, so check one exact number with a carrier lookup.
What time zone is area code 920 in?
920 is on Central Time.
When did area code 920 start?
920 went into service on July 26, 1997, when it was split off from 414.
Is 920 the same area as 274?
Yes. 274 (since 2023) covers the same ground as 920. Nobody's number changed when it was added; new lines simply get whichever code has numbers left, so two neighbours can have different codes.
How do I dial a 920 number?
Local calls need all 10 digits: 920-555-0142.
Is 920 a toll-free number?
No. 920 is a regular area code for Green Bay and Appleton in Wisconsin, not a toll-free one. The toll-free codes in North America are 800, 833, 844, 855, 866, 877 and 888.
What area codes are near 920?
The closest are 414 (Milwaukee, Wisconsin), 262 (Waukesha, Wisconsin), 608/353 (Madison, Wisconsin) and 715/534 (Eau Claire, Wisconsin), measured between the centres of each area.
Who called me from a 920 number?
Enter the full 10-digit number in the lookup above. It returns the listed owner where there is a public record, where the number is registered, and whether it is a mobile, a landline or a VoIP line.
Is area code 920 a scam?
920 is a real Wisconsin area code, so the code itself is not a warning sign. Scam callers fake local-looking numbers on purpose, so judge the call by what the caller asks for, and look the number up before calling back.
Put this lookup on your site: our free area code widget takes two lines of code and shows any US area code's state, time zone and local time.
Source: NANPA, the North American Numbering Plan Administrator: its area code database and prefix assignments, as of October 1, 2026.