Area code 564 – Washington
564 has served Washington since 2017, split from 360. It is still largely empty: 97 of 786 number blocks allocated. No carrier dominates: Other CLEC / VoIP 24.7%, T-Mobile 23.7%, Verizon 16.5%. It shares its geography with overlay codes 206, 360, so local calls take all ten digits. Spam complaints are comparatively rare: 188 in the 33 days to 30 October 2026, 350th of the 422 codes with five or more complaints.
- State
- Washington
- In service since
- 2017
- Time zone
- Pacific
Who holds 564 number blocks
Share of the 97 assigned NXX blocks (12.3% of the 786 possible), across 21 carriers. This is share of number blocks, not of subscribers.
- T-Mobile23.7%
- Other CLEC / VoIP22.7%
- Verizon16.5%
- Onvoy13.4%
- AT&T10.3%
- Lumen5.2%
- Comcast3.1%
- Bandwidth2.1%
- Dish1%
- Allstream1%
- Charter1%
Spam complaints naming 564
FTC Do Not Call complaints where the caller ID was a 564 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 564
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 33.
Timeline
- 2017 564 goes into service, split from or overlaid on 360.
More about 564
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 564
What state is area code 564?
Washington. It covers the same area as 206/564, 360/564.
Is a call from 564 a scam?
Not by itself. 564 drew 188 FTC complaints in the 33 days to 30 October 2026, 350th 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 564 numbers?
Other CLEC / VoIP holds the largest share of assigned number blocks at 24.7%. 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 564?
Yes – ten digits for local calls in 564, 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.