Area code 712 – Iowa
712 is one of the original area codes, in service across Iowa since 1947. 633 of its 786 number blocks are allocated (81%). Other CLEC / VoIP is the largest holder with 38.2% of blocks, ahead of Windstream at 13.1%. FTC complaints naming a 712 caller ID totalled 424 in the 33 days to 30 October 2026 (236th of 422 ranked codes). Numbers are spread across 244 rate centers, which is typical of a mostly rural code.
- State
- Iowa
- In service since
- 1947
- Time zone
- Central
- Shares area with
- No overlay
Who holds 712 number blocks
Share of the 633 assigned NXX blocks (80.5% of the 786 possible), across 114 carriers. This is share of number blocks, not of subscribers.
- Other CLEC / VoIP39.8%
- Windstream13.6%
- Lumen11.8%
- Verizon11.2%
- AT&T7.4%
- Onvoy4.9%
- Frontier4.1%
- T-Mobile3.9%
- Bandwidth0.8%
- Comcast0.6%
- Telnyx0.5%
- Dish0.5%
- Charter0.3%
- Altice0.2%
- Vonage0.2%
- Twilio0.2%
Spam complaints naming 712
FTC Do Not Call complaints where the caller ID was a 712 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 712
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 244.
Timeline
- 1947 712 assigned in the original North American Numbering Plan.
More about 712
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 712
What state is area code 712?
Iowa.
Is a call from 712 a scam?
Not by itself. 712 drew 424 FTC complaints in the 33 days to 30 October 2026, 236th 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 712 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 38.2%. 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 712?
No. NANPA records 712 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.