Area code 872 – Illinois
872 has served Illinois since 2009, split from 312. 281 of its 786 number blocks are allocated (36%). No carrier dominates: T-Mobile 23.8%, Onvoy / Inteliquent 20.3%, Other CLEC / VoIP 18.1%. It shares its geography with overlay codes 312, 773, so local calls take all ten digits. FTC complaints naming a 872 caller ID totalled 506 in the 33 days to 30 October 2026 (209th of 422 ranked codes).
- State
- Illinois
- In service since
- 2009
- Time zone
- Central
Who holds 872 number blocks
Share of the 281 assigned NXX blocks (35.8% of the 786 possible), across 38 carriers. This is share of number blocks, not of subscribers.
- T-Mobile26%
- Onvoy20.3%
- AT&T16.7%
- Other CLEC / VoIP16.4%
- Bandwidth6.8%
- Verizon3.6%
- Charter2.5%
- Peerless2.1%
- Lumen2.1%
- Vonage0.7%
- Dish0.7%
- Comcast0.4%
- VoIP Innovations0.4%
- Telnyx0.4%
- Windstream0.4%
- 8x80.4%
- Twilio0.4%
Spam complaints naming 872
FTC Do Not Call complaints where the caller ID was a 872 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 872
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 11.
Timeline
- 2009 872 goes into service, split from or overlaid on 312.
More about 872
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 872
What state is area code 872?
Illinois. It covers the same area as 312/872, 773/872.
Is a call from 872 a scam?
Not by itself. 872 drew 506 FTC complaints in the 33 days to 30 October 2026, 209th 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 872 numbers?
T-Mobile holds the largest share of assigned number blocks at 23.8%. 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 872?
NANPA records the local dialing plan for 872 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.