Area code 641 – Iowa
641 has served Iowa since 2000, split from 515. 584 of its 786 number blocks are allocated (74%). No carrier dominates: Other CLEC / VoIP 34.9%, Windstream 21.1%, Verizon 8.0%. Spam complaints are comparatively rare: 337 in the 33 days to 30 October 2026, 286th of the 422 codes with five or more complaints. Numbers are spread across 223 rate centers, which is typical of a mostly rural code.
- State
- Iowa
- In service since
- 2000
- Time zone
- Central
- Shares area with
- No overlay
Who holds 641 number blocks
Share of the 584 assigned NXX blocks (74.3% of the 786 possible), across 73 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP41.1%
- Windstream21.2%
- Verizon8%
- Lumen6.5%
- T-Mobile5.3%
- Charter5%
- AT&T5%
- Onvoy3.8%
- Frontier2.9%
- Bandwidth0.5%
- Dish0.3%
- Telnyx0.2%
- Vonage0.2%
Spam complaints naming 641
FTC Do Not Call complaints where the caller ID was a 641 number, 28 Sep – 30 Oct 2026 (33 days). Caller IDs on spam calls are frequently spoofed, so these are complaints about the code, not calls proven to originate in it.
Rate centers in 641
NANPA allocates number blocks to rate centers and records their names abbreviated to ten characters, so these are NANPA's codes rather than place names – CHAMPAURBN is Champaign-Urbana, NWYRCYZN01 is a New York City zone. We show them unchanged instead of guessing at the full names. Showing the largest 5 of 223.
Timeline
- 2000 641 goes into service, split from or overlaid on 515.
More about 641
Separate pages for the questions that need their own answer: what time it is there, what the complaint data says, who holds the number blocks, and how the code compares with the one it shares its area with.
Frequently asked about 641
What state is area code 641?
Iowa.
Is a call from 641 a scam?
Not by itself. 641 drew 337 FTC complaints in the 33 days to 30 October 2026, 286th of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number.
Which carrier owns 641 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 34.9%. The rest is spread across 3 other carriers. This is share of number blocks, not of subscribers – people keep their numbers when they switch carriers.
Do I need to dial 10 digits in 641?
No. NANPA records 641 as 7-digit dialing for local calls.
Sources and verification
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 25 daily files 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
NANPA dialing note for this code: “7D”. Reviewed by the data desk. Spotted an error? Request a correction.