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.
| Rate centre | Region | Area codes | Incumbent | LATA | LIR | Blocks | Switches |
|---|---|---|---|---|---|---|---|
| Lake Como | PA | 272, 570 | VERIZON PENNSYLVANIA, INC. (9208) | 232 | — | 17 | BMBGPABLXMX, LAKE COMO, SCTNPA01XUX +5 |
| Lake Conroe | TX | 936 | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY (2109) | 560 | — | 11 | CONROE, HSTWTXUFAMD |
| Lake Conroe EMS | TX | 936 | CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY (2109) | 560 | — | 11 | CONROE, HSTDTXBG9MD, HSTNTXMOX7X |
| Lake Cowichan | BC | 236, 250 | TELUS COMMUNICATIONS, INC. - BC (8086) | 888 | 808608 | 3 | DNCNBC064MD, LAKE COWICHAN, LCWCBCAH0MD |
| Lake Crystal | MN | 507 | CONSOLIDATED COMMUNICATIONS MID-COM COMPANY - MN (1375) | 620 | — | 14 | LAKE CRYSTAL, MNKTMNXM6MD, MNKTMNXMVMD +5 |
| Lake Dallas | TX | 940 | BRIGHTSPEED OF NORTHERN TEXAS, INC. (2101) | 552 | — | 59 | DALLAS, DLLSTX37XWZ, DLLSTX97X5X +11 |
| Lake Dallas EMS | TX | 940 | BRIGHTSPEED OF NORTHERN TEXAS, INC. (2101) | 552 | — | 13 | FRISCO, FTWPTXZP2MD, LAKE DALLAS |
| Lake Forest | IL | 224, 847 | ILLINOIS BELL TEL CO (9329) | 358 | — | 221 | BENSENVILLE, CHCGIL24SMD, CHCGIL24XMD +15 |
| Lake Geneva | WI | 262 | WISCONSIN BELL INC (9327) | 356 | — | 175 | FDULWIGN1MD, LAKE GENEVA, MILWAUKEE +20 |
| Lake George | CO | 719 | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK (2185) | 658 | — | 31 | CLSPCOMAXFY, CLSPCOMAXKY, CLSPCOMAXMX +3 |
| Lake George | NY | 518, 838 | VERIZON NEW YORK, INC. (9104) | 134 | — | 40 | ALBANY, ALBYNYSS03Z, ALBYNYSSX8Z +12 |
| Lake Gogebic | MI | 906 | UPPER PENINSULA TEL. CO. (0732) | 342 | — | 3 | LAKE GOGEBIC, MUNISING |
| Lake Havasu City | AZ | 928 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL (2172) | 666 | — | 151 | GLVYAZXC2MD, KGMNAZXC7MD, KGMNAZXCCMD +13 |
| Lake Hinkle | AR | 479 | SCOTT COUNTY TELEPHONE CO. (3031) | 526 | — | 1 | LAKE HINKLE |
| Lake Hughes | CA | 661 | FRONTIER CALIFORNIA INC. (2319) | 730 | — | 68 | LAKE HUGHES, LOS ANGELES, LSANCA039MD +9 |
| Lake Huntington | NY | 845 | VERIZON NEW YORK, INC. (9104) | 133 | — | 19 | LAKE HUNTINGTON, PGHKNYSHSMD, PGHKNYSHX6Y +5 |
| Lake Isabella | CA | 442, 760 | FRONTIER CALIFORNIA INC. (4420) | 730 | — | 67 | BLTNCAADGMD, IRVINE, IRVNCASM1MD +16 |
| Lake Kemp | TX | 940 | SANTA ROSA TEL COOP INC (2141) | 548 | — | 14 | OKLAUNION, WCFLTXGA2MD, WCFLTXRK0MD |
| Lake Kickapoo | TX | 940 | COMMUNITY TEL. CO. (2061) | 548 | — | 1 | SCOTLAND |
| Lake Leelanau | MI | 231 | MICHIGAN BELL TEL CO (9323) | 348 | — | 32 | BERRIEN SPRINGS, GDRPMIBL00Z, GDRPMIBL04Z +10 |
| Lake Lillian | MN | 320 | CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN (1123) | 626 | — | 11 | LAKE LILLIAN, STCDMNTOX3X, STCDMNTOXTX |
| Lake Linden | MI | 906 | MICHIGAN BELL TEL CO (9323) | 342 | — | 15 | BRLDMIMNBMD, HNCCMIMN3MD, LAKE LINDEN +4 |
| Lake Lotawana | MO | 816 | EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO (1811) | 524 | — | 11 | KSCYKSJOSMD, KSCYMO55X1Z, KSCYMO55XSY +3 |
| Lake Lotawana MCA3 | MO | 816 | EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO (1811) | 524 | — | 9 | KSCAMO961MD, LAKE LOTAWANA, WRBGMOXAXCX +1 |
| Lake Louise | AB | 403, 587 | TELUS COMMUNICATIONS, INC. (8084) | 888 | 808401 | 5 | CLGRAB01HMD, CLGRAB21TMD, CLGRABML3MD +2 |
| Lake Lure | NC | 828 | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (9417) | 420 | — | 27 | AHVLNCATFMD, AHVLNCDG1MD, AHVLNCOH09Z +7 |
| Lake Luzerne | NY | 518 | CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY (0096) | 134 | — | 17 | ALBYNYSS3MD, ALBYNYSSXAZ, ALBYNYSSXOX +3 |
| Lake Mead | NV | 702 | MOAPA VALLEY TEL. CO. (2353) | 721 | — | 7 | GLENDALE, LSVGNVXBXNX |
| Lake Mills | IA | 641 | WINNEBAGO COOP. TEL. ASSN. - IA (1337) | 632 | — | 8 | BOONE, DESMIADTXKX, DESMIAITX6X +1 |
| Lake Mills | WI | 274, 920 | FRONTIER NORTH INC. - WI (0886) | 356 | — | 47 | FDULWIGN1MD, LAKE MILLS, MILWAUKEE +6 |
| Lake Milton | OH | 234, 330 | BRIGHTSPEED OF NORTHWEST OHIO, INC. (0661) | 322 | — | 28 | LAKE MILTON, WRRNOHXAKMD, WRRNOHXAVMD +5 |
| Lake Mohave Ranchos | AZ | 928 | CITIZENS UTILITIES RURAL DBA FRONTIER UT RURAL (2172) | 666 | — | 30 | DOLAN SPRINGS, KGMNAZXC7MD, PHNXAZ19CMD +5 |
| Lake Mohawk | NJ | 862, 973 | BRIGHTSPEED OF CENTRAL NORTH CAROLINA, LLC (0138) | 224 | — | 17 | CLTNNJXJMMD, JRCYNJ65EMD, JRCYNJ67CMD +7 |
| Lake Monroe | IN | 812, 930 | SMITHVILLE COMM., INC DBA SMITHVILLE TELEPHONE CO. (0818) | 338 | — | 16 | BLTNIN01XEY, BLTNINED0MD, ELLETTSVILLE |
| Lake Nebagamon | WI | 715 | BRIGHTSPEED OF NORTHWEST WISCONSIN, LLC (0950) | 352 | — | 10 | EUCLWIAU3MD, HAYWARD, LAKE NEBAGAMON +2 |
| Lake Norden | SD | 605 | INTERSTATE TELECOM COOP, INC. - SD (1651) | 640 | — | 4 | CLARK, CLLKSDXA0MD |
| Lake Odessa | MI | 616 | MICHIGAN BELL TEL CO (9323) | 348 | — | 37 | BRSPMI097MD, GDRPMIBL00Z, GDRPMIBL04Z +11 |
| Lake of the Four Seasons | IN | 219 | NORTHWESTERN INDIANA TEL. CO., INC. (0800) | 358 | — | 4 | CHCGILNEXJX, HEBRON |
| Lake Orion | MI | 248, 947 | MICHIGAN BELL TEL CO (9323) | 340 | — | 102 | ANN ARBOR, DTRTMIBASMD, DTRTMIBLX4Y +11 |
| Lake Ozark-Osage Beach | MO | 573 | SOUTHWESTERN BELL (9533) | 520 | — | 117 | ELDON, LAKE OZARK, MNCHMOAQGT1 +13 |
| Lake Palestine East | TX | 903 | BRIGHTSPEED OF EASTERN TEXAS, INC. (2084) | 552 | — | 20 | ATHNTXXALMD, ATHNTXXATMD, DALLAS +4 |
| Lake Park | GA | 229 | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL (9417) | 444 | — | 20 | ALBYGAITAMD, ALBYGAMA1MD, ALBYGAMA3MD +4 |
| Lake Park | IA | 712 | QWEST CORPORATION (9631) | 630 | — | 39 | HULLIAAF1MD, LAKE PARK, SPNCIAAC2MD +5 |
| Lake Park | MN | 218 | LORETEL SYSTEMS, INC. (1443) | 636 | — | 11 | GRAND FORKS, LAKE PARK |
| Lake Placid | FL | 863 | CENTURYLINK OF FLORIDA, INC. (UNITED) (0341) | 939 | — | 121 | AVPKFLXAHMD, AVPKFLXAWMD, AVPKFLXAXJX +15 |
| Lake Placid | NY | 518, 838 | VERIZON NEW YORK, INC. (9104) | 134 | — | 93 | ALBANY, ALBYNYSS00Z, ALBYNYSS03Z +20 |
| Lake Pleasant | AZ | 928 | ACCIPITER COMMUNICATIONS INC (2191) | 666 | — | 9 | PEORIA, PHNXAZ19CMD, PHNXAZ19DMD +1 |
| Lake Pleasant | NY | 518, 838 | CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY (0096) | 134 | — | 19 | ALBANY, ALBYNYSS3MD, ALBYNYSSXAZ +4 |
| Lake Powell | UT | 435 | CITIZENS TELECOM-UTAH DBA FRONTIER COMM OF UT (4429) | 660 | — | 7 | LAKE POWELL, SLKCUT26DMD, WEST VALLEY CITY |
| Lake Preston | SD | 605 | QWEST CORPORATION (9631) | 640 | — | 37 | LAKE PRESTON, SXFLSDCHIMD, SXFLSDCONMD +7 |
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.
The fields shown on the area code, rate centre and LATA pages, in plain language.
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.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.