State-run network
$1,900/yr
City of Seattle / Seattle Public Utilities (cooperative)
Good to know: $1,900/yr for 1 login; $5,700 for 5; $10,000 for 10; $15,000 for 20; $20,000 for 40. Free for partners; one-time 90-day free test account
Where it works
1 stateState-run network for Washington.
All plans
| Plan | Price | Term |
|---|---|---|
| 1 login | $1,900/yr | Annual, invoiced |
| 5 logins | $5,700/yr | Annual |
| 10 logins | $10,000/yr | Annual |
| 20 logins | $15,000/yr | Annual |
| 40 logins | $20,000/yr | Annual |
- Free trial
- Test accounts exist (application refers to 'test logins'); length Not published
Coverage
- Where it works
- State-run network for Washington.
- Stations
- Not published; the public SourcetableThe list of every mount point a caster offers. Your app shows it when you connect without picking one.Full definition listed 537 mountpoints on Oct 17, 2026 (network products plus any single-station streams)
- Needs cell signal?
- Yes: NTRIPThe standard way RTK corrections are sent over the internet. Think of it as internet radio for correction data.Full definition needs internet at the RoverThe receiver that moves around the job, like a survey pole or a drone. It uses the base's corrections to find its exact spot.Full definition (cell data or a phone hotspot). General rule, not an operator statement.
Connection settings
NTRIP caster
host156.74.250.108 or 156.74.250.121
PortA number that tells your device which "door" on the caster server to use. For NTRIP it's often 2101.Full definition8080
mountsBDRY3, BIGD, BIGD3, CHEL, CHEL3, COLV, COLV3, DVPT, DVPT3, EPHR, EPHR3, GRCK, GRCK3, KLTS … (537 in total)
Confirmed live: a public sourcetable request to 156.74.250.108:8080 answered on Oct 17, 2026 with 537 mountpoints.
- Must send GGAA short message your rover sends with its rough location. VRS and nearest-station streams need it to know where you are.Full definition position?
- Yes for VRSVirtual reference station. The network blends nearby stations to create a pretend base right next to you, which keeps the baseline short.Full definition / network / nearest-base mountpoints (your rover must send its position as an NMEAA common text format GPS receivers use to report position and status. GGA is one NMEA message.Full definition GGA message). General rule based on the mount types.
Sign-up steps
- Sign the WSRN agreement and application form
- Mail or email it to Seattle Public Utilities
- Accounts open when the signed form arrives; invoice due within 30 days
- Sign-up page
- Go to sign-up →
- Who can sign up
- Accounts only for subscriber's own employees; no sharing; one login per connection
Fine print
- Terms / user agreement
- Read terms →
- Support
- Phone help desk Mon-Fri 9am-3pm Pacific (connection issues only)
- Last checked
- Oct 17, 2026
Conflict resolved: it's paid. The right domain is wsrn.org; the old wsrn3.org link is dead. Invoiced yearly with no credit cards.
States covered1
Not listed by the operator: discounts, what's included, a coverage map, mountpoints and a few other details. Ask them before you sign up if these matter to you.
No user reliability reports yet. Used it in the field? Tell us how it went.