Area code 602 – Arizona
602 is one of the original area codes, in service across Arizona since 1947. 748 of its 786 number blocks are allocated – about 95% full. Lumen / CenturyLink is the largest holder with 37.8% of blocks, ahead of Verizon at 17.6%. It shares its geography with overlay codes 480, 623, so local calls take all ten digits. 931 FTC complaints named a 602 caller ID in the 33 days to 30 October 2026, putting it 52nd of 422 codes with five or more complaints. The dominant complaint type is “Other”. All of its numbers sit in a single telephone rate center covering the whole area.
- State
- Arizona
- In service since
- 1947
- Time zone
- Mountain
Who holds 602 number blocks
Share of the 748 assigned NXX blocks (95.2% of the 786 possible), across 33 carriers. This is share of number blocks, not of subscribers.
- Lumen37.8%
- Verizon17.6%
- T-Mobile15.2%
- AT&T9.8%
- Onvoy4.4%
- Spok2.8%
- Comcast2.7%
- Other CLEC / VoIP2.5%
- Allstream2%
- Bandwidth1.9%
- Peerless1.1%
- Charter0.7%
- Windstream0.5%
- Telnyx0.4%
- Vonage0.4%
- Dish0.1%
Spam complaints naming 602
FTC Do Not Call complaints where the caller ID was a 602 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 602
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. This code has a single rate center covering its whole area.
Timeline
- 1947 602 assigned in the original North American Numbering Plan.
More about 602
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 602
What state is area code 602?
Arizona. It covers the same area as 480/602/623.
Is a call from 602 a scam?
Not by itself. 602 drew 931 FTC complaints in the 33 days to 30 October 2026, 52nd of 422 ranked codes – mid-pack or lower. Spam callers spoof caller IDs, so the only useful check is the full number. The most reported category here is “Other”.
Which carrier owns 602 numbers?
Lumen / CenturyLink holds the largest share of assigned number blocks at 37.8%. 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 602?
Yes – ten digits for local calls in 602, 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.