--- title: "Spok phone number prefixes" url: "https://lookvalid.com/carriers/spok.md" canonical_url: "https://lookvalid.com/carriers/spok" last_updated: "2026-10-19" type: "reference" summary: "Spok holds 1,941 of the 197,646 phone prefixes in service (<1%), across 38 states and territories and 181 area codes, per NANPA." related: ["https://lookvalid.com/carriers.md", "https://lookvalid.com/tools/carrier-lookup.md"] --- # Spok phone number prefixes Spok holds 1,941 of the 197,646 phone prefixes in service (<1%), across 38 states and territories and 181 area codes, per NANPA. Spok is one of the largest holders of North American phone number prefixes. NANPA assigned it 1,941 of the 197,646 central office codes in service, <1% of the total. ## Holder type No description is known for this holder, so it is not labeled mobile, landline or wholesale. ## Facts - Prefixes held: 1,941 of 197,646 in service (<1%) - States and territories: 38 - Area codes: 181 - Pooled prefixes: 0 of 1,941 (<1%) - Thousands-blocks held in pooled prefixes: 0 - Rate centers: 455 - Registered names: Spok, INC. - Operating company numbers under this name: 1 ## Prefixes by state or territory | State or territory | Prefixes | | --- | --- | | CA | 244 | | NY | 225 | | TX | 212 | | FL | 137 | | OH | 116 | | IL | 112 | | PA | 94 | | MI | 92 | | NC | 59 | | TN | 49 | | LA | 48 | | AL | 41 | | NJ | 40 | | MD | 37 | | CO | 36 | | WA | 36 | | WI | 34 | | GA | 30 | | SC | 29 | | MO | 25 | | AZ | 23 | | HI | 23 | | IN | 23 | | MN | 23 | | OR | 23 | | CT | 22 | | OK | 18 | | VA | 16 | | DC | 14 | | UT | 13 | | KY | 11 | | MS | 10 | | KS | 8 | | NM | 5 | | NV | 5 | | DE | 4 | | RI | 3 | | NE | 1 | ## Prefixes by area code | Area code | Prefixes | | --- | --- | | [917](https://lookvalid.com/area-code/917.md) | 133 | | [713](https://lookvalid.com/area-code/713.md) | 62 | | [305](https://lookvalid.com/area-code/305.md) | 42 | | [215](https://lookvalid.com/area-code/215.md) | 36 | | [312](https://lookvalid.com/area-code/312.md) | 33 | | [214](https://lookvalid.com/area-code/214.md) | 31 | | [303](https://lookvalid.com/area-code/303.md) | 31 | | [410](https://lookvalid.com/area-code/410.md) | 28 | | [516](https://lookvalid.com/area-code/516.md) | 28 | | [408](https://lookvalid.com/area-code/408.md) | 27 | | [708](https://lookvalid.com/area-code/708.md) | 26 | | [504](https://lookvalid.com/area-code/504.md) | 25 | | [216](https://lookvalid.com/area-code/216.md) | 24 | | [310](https://lookvalid.com/area-code/310.md) | 24 | | [412](https://lookvalid.com/area-code/412.md) | 24 | | [206](https://lookvalid.com/area-code/206.md) | 23 | | [330](https://lookvalid.com/area-code/330.md) | 23 | | [714](https://lookvalid.com/area-code/714.md) | 23 | | [808](https://lookvalid.com/area-code/808.md) | 23 | | [818](https://lookvalid.com/area-code/818.md) | 23 | | [503](https://lookvalid.com/area-code/503.md) | 22 | | [205](https://lookvalid.com/area-code/205.md) | 21 | | [415](https://lookvalid.com/area-code/415.md) | 21 | | [602](https://lookvalid.com/area-code/602.md) | 21 | | [704](https://lookvalid.com/area-code/704.md) | 21 | | [954](https://lookvalid.com/area-code/954.md) | 21 | | [213](https://lookvalid.com/area-code/213.md) | 20 | | [972](https://lookvalid.com/area-code/972.md) | 20 | | [610](https://lookvalid.com/area-code/610.md) | 19 | | [619](https://lookvalid.com/area-code/619.md) | 19 | | [281](https://lookvalid.com/area-code/281.md) | 18 | | [414](https://lookvalid.com/area-code/414.md) | 18 | | [847](https://lookvalid.com/area-code/847.md) | 18 | | [513](https://lookvalid.com/area-code/513.md) | 17 | | [615](https://lookvalid.com/area-code/615.md) | 17 | | [314](https://lookvalid.com/area-code/314.md) | 16 | | [512](https://lookvalid.com/area-code/512.md) | 16 | | [561](https://lookvalid.com/area-code/561.md) | 16 | | [770](https://lookvalid.com/area-code/770.md) | 16 | | [901](https://lookvalid.com/area-code/901.md) | 16 | | [909](https://lookvalid.com/area-code/909.md) | 16 | | [317](https://lookvalid.com/area-code/317.md) | 15 | | [616](https://lookvalid.com/area-code/616.md) | 15 | | [817](https://lookvalid.com/area-code/817.md) | 15 | | [919](https://lookvalid.com/area-code/919.md) | 15 | | [937](https://lookvalid.com/area-code/937.md) | 15 | | [202](https://lookvalid.com/area-code/202.md) | 14 | | [407](https://lookvalid.com/area-code/407.md) | 14 | | [440](https://lookvalid.com/area-code/440.md) | 14 | | [716](https://lookvalid.com/area-code/716.md) | 14 | | [914](https://lookvalid.com/area-code/914.md) | 14 | | [916](https://lookvalid.com/area-code/916.md) | 14 | | [210](https://lookvalid.com/area-code/210.md) | 13 | | [313](https://lookvalid.com/area-code/313.md) | 13 | | [773](https://lookvalid.com/area-code/773.md) | 13 | | [248](https://lookvalid.com/area-code/248.md) | 12 | | [612](https://lookvalid.com/area-code/612.md) | 12 | | [630](https://lookvalid.com/area-code/630.md) | 12 | | [860](https://lookvalid.com/area-code/860.md) | 12 | | [231](https://lookvalid.com/area-code/231.md) | 11 | | [315](https://lookvalid.com/area-code/315.md) | 11 | | [404](https://lookvalid.com/area-code/404.md) | 11 | | [405](https://lookvalid.com/area-code/405.md) | 11 | | [510](https://lookvalid.com/area-code/510.md) | 11 | | [614](https://lookvalid.com/area-code/614.md) | 11 | | [801](https://lookvalid.com/area-code/801.md) | 11 | | [203](https://lookvalid.com/area-code/203.md) | 10 | | [562](https://lookvalid.com/area-code/562.md) | 10 | | [803](https://lookvalid.com/area-code/803.md) | 10 | | [864](https://lookvalid.com/area-code/864.md) | 10 | | [201](https://lookvalid.com/area-code/201.md) | 9 | | [301](https://lookvalid.com/area-code/301.md) | 9 | | [419](https://lookvalid.com/area-code/419.md) | 9 | | [517](https://lookvalid.com/area-code/517.md) | 9 | | [586](https://lookvalid.com/area-code/586.md) | 9 | | [631](https://lookvalid.com/area-code/631.md) | 9 | | [703](https://lookvalid.com/area-code/703.md) | 9 | | [813](https://lookvalid.com/area-code/813.md) | 9 | | [815](https://lookvalid.com/area-code/815.md) | 9 | | [843](https://lookvalid.com/area-code/843.md) | 9 | | [225](https://lookvalid.com/area-code/225.md) | 8 | | [336](https://lookvalid.com/area-code/336.md) | 8 | | [361](https://lookvalid.com/area-code/361.md) | 8 | | [502](https://lookvalid.com/area-code/502.md) | 8 | | [518](https://lookvalid.com/area-code/518.md) | 8 | | [865](https://lookvalid.com/area-code/865.md) | 8 | | [253](https://lookvalid.com/area-code/253.md) | 7 | | [256](https://lookvalid.com/area-code/256.md) | 7 | | [269](https://lookvalid.com/area-code/269.md) | 7 | | [323](https://lookvalid.com/area-code/323.md) | 7 | | [334](https://lookvalid.com/area-code/334.md) | 7 | | [423](https://lookvalid.com/area-code/423.md) | 7 | | [570](https://lookvalid.com/area-code/570.md) | 7 | | [626](https://lookvalid.com/area-code/626.md) | 7 | | [727](https://lookvalid.com/area-code/727.md) | 7 | | [732](https://lookvalid.com/area-code/732.md) | 7 | | [816](https://lookvalid.com/area-code/816.md) | 7 | | [828](https://lookvalid.com/area-code/828.md) | 7 | | [850](https://lookvalid.com/area-code/850.md) | 7 | | [856](https://lookvalid.com/area-code/856.md) | 7 | | [973](https://lookvalid.com/area-code/973.md) | 7 | | [251](https://lookvalid.com/area-code/251.md) | 6 | | [252](https://lookvalid.com/area-code/252.md) | 6 | | [337](https://lookvalid.com/area-code/337.md) | 6 | | [609](https://lookvalid.com/area-code/609.md) | 6 | | [734](https://lookvalid.com/area-code/734.md) | 6 | | [845](https://lookvalid.com/area-code/845.md) | 6 | | [918](https://lookvalid.com/area-code/918.md) | 6 | | [920](https://lookvalid.com/area-code/920.md) | 6 | | [952](https://lookvalid.com/area-code/952.md) | 6 | | [956](https://lookvalid.com/area-code/956.md) | 6 | | [228](https://lookvalid.com/area-code/228.md) | 5 | | [262](https://lookvalid.com/area-code/262.md) | 5 | | [360](https://lookvalid.com/area-code/360.md) | 5 | | [505](https://lookvalid.com/area-code/505.md) | 5 | | [601](https://lookvalid.com/area-code/601.md) | 5 | | [608](https://lookvalid.com/area-code/608.md) | 5 | | [702](https://lookvalid.com/area-code/702.md) | 5 | | [719](https://lookvalid.com/area-code/719.md) | 5 | | [810](https://lookvalid.com/area-code/810.md) | 5 | | [863](https://lookvalid.com/area-code/863.md) | 5 | | [904](https://lookvalid.com/area-code/904.md) | 5 | | [913](https://lookvalid.com/area-code/913.md) | 5 | | [925](https://lookvalid.com/area-code/925.md) | 5 | | [979](https://lookvalid.com/area-code/979.md) | 5 | | [985](https://lookvalid.com/area-code/985.md) | 5 | | [989](https://lookvalid.com/area-code/989.md) | 5 | | [302](https://lookvalid.com/area-code/302.md) | 4 | | [318](https://lookvalid.com/area-code/318.md) | 4 | | [409](https://lookvalid.com/area-code/409.md) | 4 | | [650](https://lookvalid.com/area-code/650.md) | 4 | | [707](https://lookvalid.com/area-code/707.md) | 4 | | [717](https://lookvalid.com/area-code/717.md) | 4 | | [757](https://lookvalid.com/area-code/757.md) | 4 | | [760](https://lookvalid.com/area-code/760.md) | 4 | | [830](https://lookvalid.com/area-code/830.md) | 4 | | [908](https://lookvalid.com/area-code/908.md) | 4 | | [316](https://lookvalid.com/area-code/316.md) | 3 | | [401](https://lookvalid.com/area-code/401.md) | 3 | | [651](https://lookvalid.com/area-code/651.md) | 3 | | [740](https://lookvalid.com/area-code/740.md) | 3 | | [765](https://lookvalid.com/area-code/765.md) | 3 | | [941](https://lookvalid.com/area-code/941.md) | 3 | | [219](https://lookvalid.com/area-code/219.md) | 2 | | [254](https://lookvalid.com/area-code/254.md) | 2 | | [260](https://lookvalid.com/area-code/260.md) | 2 | | [321](https://lookvalid.com/area-code/321.md) | 2 | | [352](https://lookvalid.com/area-code/352.md) | 2 | | [386](https://lookvalid.com/area-code/386.md) | 2 | | [435](https://lookvalid.com/area-code/435.md) | 2 | | [607](https://lookvalid.com/area-code/607.md) | 2 | | [636](https://lookvalid.com/area-code/636.md) | 2 | | [706](https://lookvalid.com/area-code/706.md) | 2 | | [724](https://lookvalid.com/area-code/724.md) | 2 | | [763](https://lookvalid.com/area-code/763.md) | 2 | | [772](https://lookvalid.com/area-code/772.md) | 2 | | [805](https://lookvalid.com/area-code/805.md) | 2 | | [814](https://lookvalid.com/area-code/814.md) | 2 | | [832](https://lookvalid.com/area-code/832.md) | 2 | | [858](https://lookvalid.com/area-code/858.md) | 2 | | [859](https://lookvalid.com/area-code/859.md) | 2 | | [903](https://lookvalid.com/area-code/903.md) | 2 | | [910](https://lookvalid.com/area-code/910.md) | 2 | | [915](https://lookvalid.com/area-code/915.md) | 2 | | [270](https://lookvalid.com/area-code/270.md) | 1 | | [309](https://lookvalid.com/area-code/309.md) | 1 | | [402](https://lookvalid.com/area-code/402.md) | 1 | | [425](https://lookvalid.com/area-code/425.md) | 1 | | [434](https://lookvalid.com/area-code/434.md) | 1 | | [480](https://lookvalid.com/area-code/480.md) | 1 | | [520](https://lookvalid.com/area-code/520.md) | 1 | | [540](https://lookvalid.com/area-code/540.md) | 1 | | [541](https://lookvalid.com/area-code/541.md) | 1 | | [571](https://lookvalid.com/area-code/571.md) | 1 | | [580](https://lookvalid.com/area-code/580.md) | 1 | | [661](https://lookvalid.com/area-code/661.md) | 1 | | [678](https://lookvalid.com/area-code/678.md) | 1 | | [812](https://lookvalid.com/area-code/812.md) | 1 | | [931](https://lookvalid.com/area-code/931.md) | 1 | | [936](https://lookvalid.com/area-code/936.md) | 1 | | [940](https://lookvalid.com/area-code/940.md) | 1 | ## Caveats The holder is the company NANPA assigned the codes to, under the legal name it registered, which can differ from the brand customers see. Numbers port, so a number in one of these prefixes may now be with another carrier. To see which carrier holds a number's block, use the [carrier lookup](https://lookvalid.com/tools/carrier-lookup.md). See all holders in the [ranked table](https://lookvalid.com/carriers.md). Source: NANPA central office code report dated 2026-10-17 and thousands-block report dated 2026-10-17. ## Related - [Largest phone number holders by prefix](https://lookvalid.com/carriers.md) - [Free carrier lookup](https://lookvalid.com/tools/carrier-lookup.md)