Area code 425 – Washington
425 has served Washington since 1997, split from 206. 628 of its 786 number blocks are allocated (80%). No carrier dominates: Other CLEC / VoIP 30.4%, Lumen / CenturyLink 22.0%, T-Mobile 14.5%. 862 FTC complaints named a 425 caller ID in the 33 days to 30 October 2026, putting it 74th of 422 codes with five or more complaints.
- State
- Washington
- In service since
- 1997
- Time zone
- Pacific
- Shares area with
- No overlay
Who holds 425 number blocks
Share of the 628 assigned NXX blocks (79.9% of the 786 possible), across 34 carriers. This is share of number blocks, not of subscribers.
- Lumen22%
- Ziply Fiber19.7%
- T-Mobile14.5%
- AT&T11.9%
- Verizon11.5%
- Onvoy6.5%
- Allstream6.4%
- Other CLEC / VoIP3.5%
- Comcast1.4%
- Windstream0.5%
- Peerless0.5%
- Bandwidth0.3%
- Vonage0.3%
- Charter0.3%
- Spok0.2%
- VoIP Innovations0.2%
- Telnyx0.2%
- Dish0.2%
Spam complaints naming 425
FTC Do Not Call complaints where the caller ID was a 425 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 425
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 14.
Timeline
- 1997 425 goes into service, split from or overlaid on 206.
More about 425
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 425
What state is area code 425?
Washington.
Is a call from 425 a scam?
Not by itself. 425 drew 862 FTC complaints in the 33 days to 30 October 2026, 74th 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 425 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 30.4%. 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 425?
Yes – ten digits for local calls in 425, 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.