Find RTK corrections where you work.
RTKRTKReal-time kinematic. A way to make GPS accurate to about an inch by getting live corrections from a nearby base station.Full definition makes GPSGPSThe US satellite navigation system. People often use "GPS" to mean all satellite positioning.Full definition accurate to about an inch. Type your state, ZIP or address to see the free and paid correction services there, with prices and setup details.
Free option (22)Free for residents (1)Paid only (27)NOAA CORSCentipede-RTKRTK2go
1,701 public base stations. See the ones closest to you, in miles.
Spots from NOAA CORS (NOAA does not endorse FixFinder), Centipede-RTK (ODbL 1.0) and RTK2go (list as of Oct 28, 2026).
Seen on: SideProjectors (featured) · TinyLaunch · Emlid Community (New User of the Month)
22 states have a free network for everyone, plus Maine for residents. Tap a state on the map at the top for its options.
Find the closest free and paid networks to where you work. Find networks near me
Working near a state line? Check your exact spot
All 50 states
The label shows the best access you can get there: Free means a free network exists.
Who covers which states?
Pick a network to see the states on its published list. Services that don't publish a list are marked, and we don't guess for them.
Tap a network below to light up the states it lists. Yellow = state is on the network's list (coverage inside a state can still be partial).
Regional / private
State-run
Nationwide (dashed = no state list published)
Regional and private networks20
Networks run by companies, equipment dealers or volunteers that cover a few states.
$375 per 30-day subscription; yearly from $3,135 (net 30) or $275/mo ($3,300/yr)
States: VA, DC, MD, DE, PA, NJ, NY, CT, RI, MA, VT, NH, ME
Last checked Nov 2, 2026
View details →AllTerra Central RTKNet
Paid
$2,000/yr
States: TX, OK, NM, AZ
Last checked Nov 2, 2026
View details →TURN GPS (Utah network)
Paid
$600/yr per subscription (covers TURN + Nevada GPS)
States: ID, WY, NV
✓ Fee confirmed by network operator, Oct 29, 2026Last checked Nov 2, 2026
View details →Trimble VRS Now (mapped states)
Paid
Not published (buy through Trimble dealers or the Trimble store)
States: AL, CO, FL, GA, IA, IL, IN, KY, MN, MS, ND, NE, NM, OR, SD
Last checked Nov 2, 2026
View details →Seiler Nebraska Trimble Network
Paid
Not published (fee based; contact Seiler)
States: NE
Last checked Nov 2, 2026
View details →FreeSingle base free; network corrections fee based
States: IL
Last checked Nov 2, 2026
View details →Ask for a quoteNot published
States: AK
Last checked Nov 2, 2026
View details →Ask for a quoteNot published
States: ND, SD, MN
Last checked Nov 2, 2026
View details →iNET Reference Station Network
Paid
Not published (yearly, monthly and short-term plans; site licenses for multiple machines)
States: AL, MS, TN, GA, SC
Last checked Nov 2, 2026
View details →from $1,500/yrStation owners pay $1,500/yr per station; rover pricing through local partner
States: IN, OH, NY, MI, ID, WI, IL, NE, KS, OR, ND, IA
Last checked Nov 2, 2026
View details →GreenMark Equipment RTK Network
Paid
$1,250/yr first unit, $1,100 second, $900 each additional; 20% off with 3+ subscriptions
States: MI, IN
Last checked Nov 2, 2026
View details →Keating Tractor RTK Network
Paid
$3,000 startup network fee + $300/yr per receiver
States: KS, OK
Last checked Nov 2, 2026
View details →Trimble VRS Now (Hawaii)
Paid
Not published
States: HI
Last checked Nov 2, 2026
View details →from $295/mo$295/mo; $695/6 mo; $995/yr; $1,595/2 yr
States: DE, MD, NJ, PA, DC
Last checked Nov 2, 2026
View details →from $50$50/day, $300/mo, $2,000/yr; 7-day free trial
States: AZ, CA
Last checked Oct 17, 2026
View details →Ask for a quoteNot published (call 800-444-5661)
States: TX, LA
Last checked Nov 2, 2026
View details →Caltrans RTNs (District 6 and others)
Restricted
Not available to the public
States: CA
Last checked Nov 2, 2026
View details →Ask for a quoteNot available to the public
States: PA
Last checked Nov 2, 2026
View details →KDOT GNSS Network (Pivot)
Restricted
Not published
States: KS
Last checked Nov 2, 2026
View details →FreeFree, no sign-up
States: IN, MI, MT, NE, UT, WA
Last checked Nov 2, 2026
View details →Nationwide services in detail24
Point One Navigation Polaris
Paid
Virtual RTK $350/yr or $40/mo per license (about 4 in; contiguous US only); True RTK $750/yr or $85/mo per license (about 0.4-1.2 in)
US nationwide
Last checked Nov 2, 2026
View details →from $40/mo$40/mo or $400/yr per device
Global community-built network
Last checked Nov 2, 2026
View details →from $40/mo$40/mo, $400/yr, or $1,920 for 5 yrs per device
Global
Last checked Nov 2, 2026
View details →from $100From $100 (shortest term; see page for durations)
Reseller; coverage varies by state
Last checked Nov 2, 2026
View details →from $699$699 for 1 year, or $1,199 up front for 3 years ($399/yr), per device; 1st year included with eligible Reach receivers; buy at store.emlid.com or Emlid dealers
Emlid receivers only
Last checked Nov 4, 2026
View details →u-blox PointPerfect Flex
Paid
$5.90/mo for up to 100 hrs, or $27/mo unlimited; 30-day free trial
RTK-SSR, nationwide; works with u-blox and non-u-blox receivers
Last checked Nov 4, 2026
View details →u-blox PointPerfect Live
Paid
Contact vendor for pricing
Network RTK (NRTK); regional coverage in North America, check u-blox's map; ask u-blox for pricing
Last checked Nov 4, 2026
View details →Swift Navigation Skylark
Paid
From $69/mo (0.4 in RTK) or $29/mo (under-4-inch RTK-SSR) per ArduSimple
Last checked Nov 2, 2026
View details →Leica (HxGN) SmartNet
Paid
Contact vendor for pricing
Ask the operator for a quote
Last checked Nov 2, 2026
View details →Ask for a quoteContact vendor for pricing
Ask the operator for a quote
Last checked Nov 2, 2026
View details →from $1,800$1,800 new US subscription (Topcon store); monthly/project terms via dealers
US network, 200 stations added Jan 2025; works with any network rover
Last checked Nov 2, 2026
View details →from $1,500/yr$1,500/yr; 14-day free trial
US nationwide, single NTRIP mount point, 1,700+ bases
Last checked Oct 17, 2026
View details →FreeFree community caster; no quality guarantees
Coverage depends on volunteer bases
Last checked Nov 2, 2026
View details →FreeFree post-processing data (RINEX); not a real-time RTK service
Use for PPK, not live RTK
Last checked Nov 2, 2026
View details →from $20$20 per 30 days + $0.15/hr used
Community-built global network; pay per hour
Last checked Nov 2, 2026
View details →NGF NOTA real-time streams
Free
Free for non-commercial use; commercial license required
Run by the National Geophysical Facility (NGF). Science-grade stations (NOTA); pick a station near you
✓ Listing confirmed by operator, Nov 2, 2026Last checked Nov 2, 2026
View details →FreeFree (relay for your own base station)
Not a network: sends YOUR base's corrections to your rover over the internet
Last checked Nov 4, 2026
View details →Trimble CenterPoint RTX
Paid
$1,150/yr (US dealer listing)
Satellite PPP; works without cell signal; Trimble receivers
Last checked Nov 2, 2026
View details →from $480/mo$480/mo per user (dealer listing)
Subscription GNSS for phones/tablets with the DA2 antenna
Last checked Nov 2, 2026
View details →Ask for a quoteNot published (dealer quote)
Satellite PPP (also sold as Leica SmartLink and by Ag Leader)
Last checked Nov 2, 2026
View details →from $1,250Not published (dealer); forum reports ~$1,250-$1,500/machine/yr
Ag: StarFire receivers via Deere dealers
Last checked Nov 2, 2026
View details →Ask for a quotePrice set by your dealer
Ag: cellular RTK for Case IH AFS receivers
Last checked Nov 2, 2026
View details →Ask for a quoteNot published (dealer subscription)
Ag: cellular RTK to a tractor modem, about 0.6 in
Last checked Nov 2, 2026
View details →IGS real-time streams (IGS-IP / BKG)
Free
Free (registration required)
Science streams: raw global stations and real-time PPP orbit/clock corrections; not a plug-and-play RTK service
Last checked Nov 2, 2026
View details →