NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 918
SOUTHWESTERN BELL 236
NEW CINGULAR WIRELESS PCS, LLC - IL 93
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 50
T-MOBILE USA, INC. 49
VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 36
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2007-06-01 918-709 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MUSKOGEE OK
2007-05-21 918-912 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F MUSKOGEE OK
2007-05-21 918-942 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 5 holders which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C TALIHINA OK
2007-02-09 918-415 not yet reported which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C CLAYTON OK
2007-02-09 918-737 not yet reported which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C SUMMERFLD OK
2007-02-09 918-979 9XXX which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C RED OAK OK
2007-01-26 918-795 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G MCCURTAIN OK
2007-01-26 918-821 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G QUINTON OK
2007-01-26 918-903 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G LONGTOWN OK
2007-01-26 918-993 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G ENTERPRISE OK
2006-11-20 918-305 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G EUFAULA OK
2006-11-20 918-881 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G CHECOTAH OK
2006-11-20 918-909 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G KINTA OK
2006-08-09 918-444 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 TAHLEQUAH OK
2006-03-28 918-504 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TULSA OK
2006-02-17 918-704 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2006-02-17 918-845 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2006-01-05 918-603 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G PORUM OK
2006-01-05 918-702 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G KEOTA OK
2006-01-05 918-769 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G WARNER OK
2006-01-05 918-975 not yet reported which blocks → CROSS WIRELESS, L.L.C. 148G KEEFETON OK
2005-10-17 918-720 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2005-09-26 918-507 6XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STILWELL OK
2005-05-27 918-987 0XXX1XXX9XXX · 2 holders which blocks → CENTRAL CELLULAR L.L.C. DBA COTC CONNECTIONS - OK 094B STROUD OK
2005-04-28 918-509 2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 CUSHING OK
2005-02-25 918-872 0–9 XXXall 10 · 3 holders which blocks → VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 1165 BROKENARRW OK
2005-02-23 918-614 0XXX1XXX8XXX9XXX · 3 holders which blocks → VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW 1165 WAGONER OK
2004-10-29 918-553 0–9 XXXall 10 · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C COLLINSVL OK
2004-09-15 918-413 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 POTEAU OK
2004-08-17 918-325 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 MIAMI OK
2004-06-09 918-602 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 COLLINSVL OK
2004-06-08 918-790 not yet reported which blocks → BANDWIDTH.COM CLEC, LLC - OK 119F SALLISAW OK
2004-05-10 918-837 4XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 JAY OK
2004-05-04 918-578 0–9 XXXall 10 · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 SKIATOOK OK
2004-04-13 918-731 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 DEPEW OK
2004-04-13 918-771 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BRISTOW OK
2004-03-19 918-990 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRAGGS OK
2003-09-25 918-290 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STROUD OK
2003-06-27 918-575 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 STILWELL OK
2003-05-30 918-314 3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 GROVE OK
2003-05-30 918-315 3XXX4XXX6XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2003-05-30 918-316 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TAHLEQUAH OK
2003-04-14 918-399 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CUSHING OK
2003-03-07 918-807 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2003-02-21 918-385 none assigned yet which blocks → OKLAHOMA WINDSTREAM, INC. 2011 POTEAU OK
2002-12-17 918-530 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRYOR OK
2002-11-20 918-735 4XXX which blocks → CROSS WIRELESS, L.L.C. 148G STIGLER OK
2002-10-08 918-917 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WILBURTON OK
2002-09-30 918-905 2XXX5XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STILWELL OK
2002-07-05 918-706 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.