NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2003-01-28 832-230 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J HSTNSUBURB TX
2003-01-27 567-276 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TIER 2 COMMUNICATIONS, LLC 8168 BRYAN OH
2003-01-27 567-279 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TIER 2 COMMUNICATIONS, LLC 8168 CELINA OH
2003-01-24 218-315 0XXX8XXX9XXX · 2 holders which blocks → COMMIO, LLC 939H SILVER BAY MN
2003-01-24 218-412 none assigned yet which blocks → ONVOY, LLC - MN 184D GRANDMRAIS MN
2003-01-24 309-536 3XXX6XXX7XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MONMOUTH IL
2003-01-24 763-222 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2003-01-24 830-337 not yet reported which blocks → SPOK, INC. 6630 UVALDE TX
2003-01-23 325-600 3XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BROWNWOOD TX
2003-01-23 406-299 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MT 9415 BUTTE MT
2003-01-23 815-750 not yet reported which blocks → MTCO COMMUNICATIONS, INC. 4837 MARSEILLES IL
2003-01-23 989-285 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 ALMA MI
2003-01-22 256-516 1XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FORT PAYNE AL
2003-01-22 414-243 5XXX6XXX7XXX8XXX which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2003-01-22 484-788 0–9 XXXall 10 · 3 holders which blocks → CTSI, INC. - PA 7513 ALLENTOWN PA
2003-01-22 574-354 3XXX4XXX5XXX6XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 NAPPANEE IN
2003-01-22 630-883 0XXX1XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ELGIN IL
2003-01-22 859-629 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LEXINGTON KY
2003-01-21 219-227 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 DYER IN
2003-01-21 254-227 5XXX6XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WACO TX
2003-01-21 307-202 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 POWELL WY
2003-01-21 320-263 0XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 WILLMAR MN
2003-01-21 320-412 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LITTLE FLS MN
2003-01-21 403-987 not yet reported which blocks → Globalstar 6996 Calgary —
2003-01-21 406-201 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FORSYTH MT
2003-01-21 417-296 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 ELDORDOSPG MO
2003-01-21 450-553 not yet reported which blocks → Videotron Ltd. 8306 St-Jerome —
2003-01-21 507-303 3XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 WINDOM MN
2003-01-21 507-484 4XXX which blocks → TERRA NOVA TELECOM INC. 145J ST PETER MN
2003-01-21 514-607 not yet reported which blocks → Bell Mobility 6574 Montreal —
2003-01-21 519-619 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 London —
2003-01-21 605-200 4XXX5XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUPREE SD
2003-01-21 605-230 2XXX3XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MOBRIDGE SD
2003-01-21 605-268 6XXX7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SISSETON SD
2003-01-21 620-255 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 DODGE CITY KS
2003-01-21 807-251 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Thunder Bay —
2003-01-21 902-259 not yet reported which blocks → Bragg Communications Inc. 4878 Elmsdale —
2003-01-21 902-512 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Shelburne —
2003-01-21 905-902 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Hamilton —
2003-01-21 956-207 none assigned yet which blocks → STPCS JOINT VENTURE, LLC 4290 EDINBURG TX
2003-01-21 970-779 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 DURANGO CO
2003-01-21 971-259 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 AMITY OR
2003-01-20 406-229 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CUT BANK MT
2003-01-20 830-200 0XXX2XXX3XXX5XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 PLEASANTON TX
2003-01-20 845-591 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NEWBURGH NY
2003-01-17 252-382 5XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 ROCKYMOUNT NC
2003-01-17 309-505 1XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC 224C SUNNYLAND IL
2003-01-17 828-581 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J SWANNANOA NC
2003-01-16 207-899 0–9 XXXall 10 · 2 holders which blocks → CRC COMMUNICATIONS OF MAINE, INC. - ME 1255 PORTLAND ME
2003-01-16 217-404 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 ROODHOUSE IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.