Area code 708 – Illinois
708 has served Illinois since 1989, split from 312. All but a handful of its 786 number blocks are allocated (784 of 786), so it is effectively exhausted. AT&T is the largest holder with 41.1% of blocks, ahead of T-Mobile at 15.6%. It shares its geography with overlay codes 464, so local calls take all ten digits. 963 FTC complaints named a 708 caller ID in the 33 days to 30 October 2026, putting it 45th of 422 codes with five or more complaints.
Who holds 708 number blocks
Share of the 784 assigned NXX blocks (99.7% of the 786 possible), across 27 carriers. This is share of number blocks, not of subscribers.
- AT&T41.1%
- T-Mobile16.7%
- Verizon12.6%
- Lumen8.5%
- Windstream5.7%
- Spok3.3%
- Other CLEC / VoIP3.3%
- Onvoy2.9%
- Comcast2.4%
- American Messaging1.5%
- Bandwidth1.1%
- Peerless0.6%
Spam complaints naming 708
FTC Do Not Call complaints where the caller ID was a 708 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 708
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 37.
Timeline
- 1989 708 goes into service, split from or overlaid on 312.
More about 708
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 708
What state is area code 708?
Illinois. It covers the same area as 464/708.
Can I still get a 708 number?
Only from recycled stock. 784 of the 786 available blocks are already allocated, so new numbers in the area normally come from the overlay codes (464/708).
Is a call from 708 a scam?
708 is one of the most complained-about codes in the country – 963 FTC complaints in the 33 days to 30 October 2026, 45th 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.
Which carrier owns 708 numbers?
AT&T holds the largest share of assigned number blocks at 41.1%. 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 708?
NANPA records the local dialing plan for 708 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.