Area code 405 – Oklahoma
405 is one of the original area codes, in service across Oklahoma since 1947. All but a handful of its 786 number blocks are allocated (783 of 786), so it is effectively exhausted. AT&T is the largest holder with 44.6% of blocks, ahead of T-Mobile at 11.1%. It shares its geography with overlay codes 572, so local calls take all ten digits. It is also among the most imitated codes in spam calls: 1,694 FTC complaints named a 405 caller ID in the 33 days to 30 October 2026, ranking 5th of 422 ranked codes. The dominant complaint type is “Dropped call or no message”.
Who holds 405 number blocks
Share of the 783 assigned NXX blocks (99.6% of the 786 possible), across 44 carriers. This is share of number blocks, not of subscribers.
- AT&T44.6%
- T-Mobile12%
- Other CLEC / VoIP9.7%
- Verizon8%
- Onvoy7.4%
- Comcast5.2%
- Windstream4.3%
- Lumen2.9%
- Bandwidth1.7%
- Spok1.4%
- Peerless0.9%
- Charter0.8%
- Telnyx0.4%
- Twilio0.1%
- VoIP Innovations0.1%
- TPx0.1%
- Dish0.1%
- Vonage0.1%
Spam complaints naming 405
FTC Do Not Call complaints where the caller ID was a 405 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 405
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 93.
Timeline
- 1947 405 assigned in the original North American Numbering Plan.
More about 405
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 405
What state is area code 405?
Oklahoma. It covers the same area as 405/572.
Can I still get a 405 number?
Only from recycled stock. 783 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (405/572).
Is a call from 405 a scam?
405 is one of the most complained-about codes in the country – 1,694 FTC complaints in the 33 days to 30 October 2026, 5th of 422 ranked codes. Most of those calls are spoofed: the caller fakes a local-looking number because it gets answered more often. Look up the specific number rather than judging by the code. The most reported category here is “Dropped call or no message”.
Which carrier owns 405 numbers?
AT&T holds the largest share of assigned number blocks at 44.6%. 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 405?
Yes – ten digits for local calls in 405, 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.