Area code 440 – Ohio
440 has served Ohio since 1997, split from 216. 757 of its 786 number blocks are allocated – about 96% full. No carrier dominates: AT&T 26.8%, Verizon 22.1%, Lumen / CenturyLink 9.4%. It shares its geography with overlay codes 436, so local calls take all ten digits. 879 FTC complaints named a 440 caller ID in the 33 days to 30 October 2026, putting it 71st of 422 codes with five or more complaints.
Who holds 440 number blocks
Share of the 757 assigned NXX blocks (96.3% of the 786 possible), across 44 carriers. This is share of number blocks, not of subscribers.
- AT&T26.8%
- Verizon22.1%
- Lumen9.4%
- T-Mobile9.1%
- Windstream8.3%
- Other CLEC / VoIP5.4%
- Onvoy4.8%
- Brightspeed3.6%
- Charter3.3%
- Bandwidth1.8%
- Spok1.8%
- Frontier0.9%
- American Messaging0.7%
- Peerless0.5%
- Comcast0.5%
- Dish0.4%
- Telnyx0.4%
- Vonage0.1%
Spam complaints naming 440
FTC Do Not Call complaints where the caller ID was a 440 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 440
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 62.
Timeline
- 1997 440 goes into service, split from or overlaid on 216.
More about 440
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 440
What state is area code 440?
Ohio. It covers the same area as 440/436.
Is a call from 440 a scam?
Not by itself. 440 drew 879 FTC complaints in the 33 days to 30 October 2026, 71st 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 440 numbers?
AT&T holds the largest share of assigned number blocks at 26.8%. 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 440?
Yes – ten digits for local calls in 440, because it shares its area with another code.
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: “10D”. Reviewed by the data desk. Spotted an error? Request a correction.