Area code 464 – Illinois
464 has served Illinois since 2022, split from 708. It is still largely empty: 112 of 786 number blocks allocated. AT&T is the largest holder with 52.7% of blocks, ahead of Other CLEC / VoIP at 18.8%. It shares its geography with overlay codes 708, so local calls take all ten digits. Spam complaints are comparatively rare: 177 in the 33 days to 30 October 2026, 354th of the 422 codes with five or more complaints.
Who holds 464 number blocks
Share of the 112 assigned NXX blocks (14.2% of the 786 possible), across 11 carriers. This is share of number blocks, not of subscribers.
- AT&T52.7%
- Onvoy18.8%
- Other CLEC / VoIP18.8%
- T-Mobile3.6%
- Verizon2.7%
- Bandwidth1.8%
- Lumen0.9%
- Charter0.9%
Spam complaints naming 464
FTC Do Not Call complaints where the caller ID was a 464 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 464
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 24.
Timeline
- 2022 464 goes into service, split from or overlaid on 708.
More about 464
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 464
What state is area code 464?
Illinois. It covers the same area as 464/708.
Is a call from 464 a scam?
Not by itself. 464 drew 177 FTC complaints in the 33 days to 30 October 2026, 354th 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 464 numbers?
AT&T holds the largest share of assigned number blocks at 52.7%. 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 464?
NANPA records the local dialing plan for 464 as “1+10D”.
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: “1+10D”. Reviewed by the data desk. Spotted an error? Request a correction.