NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2019-06-05 385-324 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BOUNTIFUL UT
2019-06-05 469-663 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALLEN TX
2019-06-05 639-949 not yet reported which blocks → SaskTel Mobility 9868 Marshall —
2019-06-05 782-244 not yet reported which blocks → TELUS Integrated Communications 2782 Hunter River —
2019-06-05 804-773 0–9 XXXall 10 · 6 holders which blocks → CSC WIRELESS, LLC 425J RICHMOND VA
2019-06-05 808-500 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - HI 210H WAILUKU HI
2019-06-05 865-353 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWIN LAKES COMMUNICATIONS, INC. - TN 204G HARRIMAN TN
2019-06-05 940-576 1XXX6XXX · 2 holders which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 WEINERT TX
2019-06-05 940-578 1XXX2XXX6XXX8XXX · 4 holders which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 THROCKMOTN TX
2019-06-04 213-758 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LSAN DA 02 CA
2019-06-04 251-305 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MOBILE AL
2019-06-04 318-692 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J MONROE LA
2019-06-04 410-936 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J SALISBURY MD
2019-06-04 418-474 not yet reported which blocks → Iristel Inc. 154E Donnacona —
2019-06-04 418-506 not yet reported which blocks → Iristel Inc. 154E Sainte-Marie-de-Beauce —
2019-06-04 431-381 not yet reported which blocks → Shaw Telecom Inc. 497E Stonewall —
2019-06-04 432-529 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H CRANE TX
2019-06-04 463-600 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H FAIRLAND IN
2019-06-04 765-270 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J RICHMOND IN
2019-06-04 813-678 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H TAMPACEN FL
2019-06-04 850-821 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C CANTONMENT FL
2019-06-04 865-600 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H GREENBACK TN
2019-06-04 940-571 not yet reported which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 BENJAMIN TX
2019-06-04 940-572 not yet reported which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 RULE TX
2019-06-03 385-314 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 PROVO UT
2019-06-03 435-900 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H ST GEORGE UT
2019-06-03 484-710 1XXX2XXX3XXX4XXX9XXX · 4 holders which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 NEWSMITHVL PA
2019-06-03 502-977 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LOUISVILLE KY
2019-06-03 561-677 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H JUPITER FL
2019-06-03 561-678 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BOYNTONBCH FL
2019-06-03 561-933 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DELRAY BCH FL
2019-06-03 561-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BELLEGLADE FL
2019-06-03 585-549 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 GENESEO NY
2019-06-03 647-589 not yet reported which blocks → FGLTEL Inc. 139J Toronto —
2019-06-03 701-717 0–9 XXXwhole prefix which blocks → LTE WIRELESS, INC. - ND 410J CARRINGTON ND
2019-06-03 720-653 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2019-06-03 727-477 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H CLEARWATER FL
2019-06-03 910-946 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SOUTHPORT NC
2019-06-03 986-333 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H POTLATCH ID
2019-05-31 207-901 0XXX1XXX2XXX6XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K BAR HARBOR ME
2019-05-31 308-267 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → CSC WIRELESS, LLC 425J GRAND IS NE
2019-05-31 341-777 0–9 XXXall 10 · 7 holders which blocks → WIDE VOICE, LLC - CA 252F HAYWARD CA
2019-05-31 516-613 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NASSAUZN05 NY
2019-05-31 602-661 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2019-05-31 639-975 not yet reported which blocks → TELUS Integrated Communications 2782 Estevan —
2019-05-31 639-990 not yet reported which blocks → TELUS Integrated Communications 2782 Tribune —
2019-05-31 639-991 not yet reported which blocks → TELUS Integrated Communications 2782 Lampman —
2019-05-31 639-992 not yet reported which blocks → TELUS Integrated Communications 2782 Carlyle —
2019-05-31 639-993 not yet reported which blocks → TELUS Integrated Communications 2782 Oxbow —
2019-05-31 689-206 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 ORLANDO FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.