Rate Centre Lookup

21,763 rate centres across the United States and Canada. A rate centre is the telephone exchange area a number is homed to — the thing that decides which area codes can serve an address, and whether a call between two points is local.

7451–7500 of 21,763
Rate centreRegionArea codesIncumbentLATALIRBlocksSwitches
GlovertownNL709NEWFOUNDLAND TELEPHONE CO., LTD. (8085)8888085025GLOVERTOWN, GLTNNFAHAMD, GLTNNFAHBMD +2
GlyndonMN218LORETEL SYSTEMS, INC. (1443)636—11GLYNDON, GRAND FORKS
GnadenhuttenOH740OHIO BELL TEL CO (9321)324—30CLMBOH1125Z, CLMBOH1143Z, CLMBOH11XJZ +9
GoblesMI269FRONTIER NORTH, INC. - MI (0695)348—18ANTSMIAD0MD, BLOOMINGDALE, BRSPMI097MD +7
GodboutQC418TELUS COMMUNICATIONS (QUEBEC) INC. - QC (8083)8888083041GODBOUT
GoddardKS316SOUTHWESTERN BELL (9533)532—116WCHTKSBRTMD, WCHTKSBRX0X, WCHTKSBRX5X +12
GoderichON226, 519, 548BELL ONTARIO (8051)88880512720CLTNON010MD, CLTNON053MD, CLTNON055MD +9
GodleyTX682, 817TEXAS WINDSTREAM, LLC (2153)552—28DALLAS, DLLSTX97X9X, FTWOTXEDX1Z +1
Godley EMSTX817TEXAS WINDSTREAM, LLC (2153)552—22DALLAS, DLLSTXTAXTZ, GODLEY
Gods Lake NarrowsMB204MANITOBA TELEPHONE SYSTEM (8088)8888088082GODS LAKE NARROWS, GODS RIVER
GoesselKS620MOUNDRIDGE TEL. CO. (1808)532—1GOESSEL
GoffKS785J.B.N. TEL. CO., INC. (1785)534—1WETMORE
GoffstownNH603CONSOLIDATED COMM OF NO. NEW ENGLAND-NH (5113)122—42GOFFSTOWN, MANCHESTER, MNCHNHACAMD +7
GogamaON249, 705BELL ONTARIO (8051)8888051026GOGAMA, GOGMON620MD, SDBRON98SMD +3
GolcondaIL618FRONTIER NORTH, INC. - IL (1015)362—21CRDLIL13AMD, CRDLILABWMD, CRDLILXEX8X +5
Gold BeachOR458, 541ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (4323)670—51CSBYOR031MD, CSBYORXXIMD, CSBYORXXRMD +11
Gold BridgeBC236, 250TELUS COMMUNICATIONS, INC. - BC (8086)8888086212GOLD BRIDGE, WSLRBCAA2MD
Gold HillOR541QWEST CORPORATION (9638)670—22EUGNOR53KMD, EUGNOR53QMD, EUGNOR53XCX +3
Gold RiverBC236, 250, 672TELUS COMMUNICATIONS, INC. - BC (8086)8888086024GOLD RIVER, VCTABC01DMD, VCTABC01VMD +1
GoldboroPE782, 902—888—2GOLDBORO, NWGLNS01EMD
GoldenBC236, 250TELUS COMMUNICATIONS, INC. - BC (8086)8888086097CRBKBC017MD, CRBKBCCH3MD, GLDNBC010MD +3
GoldenIL217ADAMS TEL. COOP. (0976)376—1GOLDEN
GoldenTX903PEOPLES TEL. COOP. (2130)554—3DRY CREEK, LGVWTXPLXMY
Golden CityMO417BRIGHTSPEED OF EAST MISSOURI, LLC (1151)522—13BASNMOXAX5X, BASNMOXAXJX, GOLDEN CITY +2
Golden LakeMI906MIDWAY TEL. CO. (0711)342—3GOLDEN LAKE, MUNISING
Golden LakeON613BELL ONTARIO (8051)8888051401GOLDEN LAKE
Golden MeadowLA985LAFOURCHE TEL. CO. (0433)490—5LAROSE, LARSLAXA2MD, MTRELANJ2MD +1
Golden ValleyND701WEST RIVER TELECOMMUNICATIONS COOP. - ND (4413)638—1HAZEN
GoldendaleWA509UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - WA (4521)672—34GOLDENDALE, LNBHWAAA0MD, PTLDORWAXDX +7
GoldfieldIA515GOLDFIELD TEL. CO. (1188)632—30BOONE, CNVLIABC1MD, DESMIA72GMD +2
GoldfieldNV775CITIZENS TELECOMM CO OF NV DBA FRONTIER COMM OF NV (2354)720—19GOLDFIELD, RENONV020MD, RENONV02PMD +5
GoldsboroNC919, 984BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (9417)426—464DRHMNCEV0MD, DURHAM, GLBONCAK0MD +27
GoldsmithTX432SOUTHWESTERN BELL (9533)542—25Goldsmith, MDLDTX87X5X, MDLDTX95TMD +7
GoldstonNC919, 984BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC (0470)949—27FYVLNCROQMD, FYVLNCXALMD, FYVLNCXAX8Y +7
GoldthwaiteTX325FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (4344)961—25BWWDTXXARMD, BWWDTXXATMD, GOLDTHWAITE +5
GoliadTX361SOUTHWESTERN BELL (9533)564—39CRCHTX9362Z, CRCHTX93X8Y, CRCHTXBB8MD +12
GolovinAK907MUKLUK TEL. CO., INC. (3016)832—2GOLOVIN
GoltryOK580KANOKLA TEL ASSN (1788)536—1SOCALDWELL
GomerOH419, 567BRIGHTSPEED OF NORTHWEST OHIO, INC. (0661)923—21GOMER, LIMAOHXAX5Y, LIMAOHXAXPX +6
GonvickMN218GARDEN VALLEY TEL. CO. (1395)636—1GONVICK
GonzalesCA831PACIFIC BELL (9740)736—69GONZALES, MONTEREY, MTRYCA012MD +15
GonzalesLA225EAST ASCENSION TELEPHONE COMPANY, LLC (0429)492—142BTRGLA12X0Z, BTRGLA12X9Z, BTRGLA12XMZ +6
GonzalesTX830FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (4344)566—80GNZLTXXA5MD, GONZALES, SAN ANTIONIO +15
GoochlandVA804VERIZON VIRGINIA, INC. (9213)248—49GOOCHLAND, RCHNVAKQ6MD, RCMDVAGRX1Y +9
Good HopeIL309MCDONOUGH TEL. COOP. (1047)977—6COLCHESTER, MCMBILAABMD, MCMBILXDJMD
Good Hope LakeBC250NORTHWESTEL (8092)8888092091GOOD HOPE LAKE
Good SpringsTX903EASTEX TEL. COOP., INC. (2068)554—11GOOD SPRINGS, MTENTXXA0MD
Good ThunderMN507CONSOLIDATED COMMUNICATIONS MID-COM COMPANY - MN (1375)620—7GOOD THUNDER, MNKTMNXMVMD, OWTNMNOWYMD +1
GoodellIA641FRONTIER COMMUNICATIONS OF IOWA, INC. (1127)632—8DESMIADTFMD, DESMIADTXJX, GOODELL
GoodellsMI810FRONTIER NORTH, INC. - MI (0695)340—24ANARMIMNX8X, BRHMMIBDBMD, DTRTMIVWDMD +5

Searching for a place, not a rate centre?

Many places are localities inside a larger rate centre and hold no numbers of their own, so they are not listed above — Clinton, Maryland is part of Washington Zone 16. The Area Codes tab resolves a place name through to whichever rate centre actually serves it.

What These Terms Mean

The fields shown on the area code, rate centre and LATA pages, in plain language.

Rate centre — The exchange area a number belongs to
The telephone exchange area a block of numbers is homed to, and what decides whether a call between two points is local. It is not a city: many places are localities inside a larger rate centre and have no numbers of their own. Clinton, Maryland is part of the Washington Zone 16 rate centre, so its numbers are 227, 240 and 301.
NPA-NXX — Area code and prefix
The first six digits of a North American number. NPA is the three-digit area code, NXX the three-digit prefix — so 416-200 is NPA 416, NXX 200. Knowing the NPA-NXX identifies the exchange a number was issued from.
Thousands-block — A prefix split into ten pieces
A prefix holds 10,000 numbers, which is more than most carriers need, so prefixes are pooled: split into ten blocks of a thousand and handed to different carriers. The block digit is the fourth digit of the number, and A means the whole prefix went to one carrier. This is why 512 has 783 prefixes but 6,011 rows — 512-555-1xxx and 512-555-2xxx can belong to different companies.
OCN — The carrier holding the block
Operating Company Number — a four-character code identifying the carrier of record for a block. Two carriers can share a brand name and still have different OCNs, which is why the tables show the number alongside the name.
ILEC — The incumbent operator for the area
Incumbent Local Exchange Carrier — the established local operator for a rate centre, usually the former Bell company. It differs from the OCN whenever a block belongs to a competitor: a Toronto block can be held by Bell Cellular while the incumbent for the rate centre is Bell Ontario.
LATA — Where a call stops being local
Local Access and Transport Area — the region a call is routed within before it becomes long-haul. The boundaries date from the 1984 Bell System breakup and still shape how calls are routed and rated. A LATA is three digits, though some rate centres are published with a two-digit sub-code appended, shown here as 460.17. Browse every LATA.
LIR — The Canadian equivalent, roughly
Local Interconnection Region — how Canadian carriers divide territory for exchanging traffic. It only applies in Canada, so this field is blank on every US record by definition rather than by omission.
Switch / CLLI — The equipment serving the block
The telephone switch a block is routed through, named by its CLLI code — an eleven-character identifier where the first characters encode the place, as in TOROON01DS0 for Toronto. A switch typed POI is a point of interconnection, where carriers hand traffic to each other rather than serve subscribers directly.
Overlay and split — The two ways to add an area code
A split divides a region and gives part of it a new code, so existing numbers change. An overlay adds a code on top of the same territory, so nobody has to change a number — but everyone has to dial ten digits, since two numbers in the same place can now differ only by area code. 786 overlaid 305 in 1998; 941 split from 813 in 1995.

One limitation worth knowing. All of this describes the block a number was issued from. Number portability means a number can be carried to another carrier while keeping its digits, so the carrier shown is the carrier of record for the block, not necessarily whoever serves that specific line today. Nothing in this data can tell you which — only a live portability lookup can.