NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

357 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 27
ONVOY, LLC - NJ 20
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
2022-12-13 727-620 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E STPETERSBG FL
2022-12-13 754-296 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E FTLAUDERDL FL
2022-12-13 810-200 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2022-12-13 845-924 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NANUET NY
2022-12-13 929-659 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN13 NY
2022-12-13 930-522 2XXX which blocks → TERRA NOVA TELECOM INC. 145J TERREHAUTE IN
2022-12-13 952-256 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2022-12-12 272-308 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWMILFORD PA
2022-12-12 341-224 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2022-12-12 430-370 0XXX1XXX3XXX8XXX · 3 holders which blocks → ONVOY, LLC - TX 903C GARY TX
2022-12-12 472-227 2XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - NC 638E MT GILEAD NC
2022-12-12 534-208 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICE LAKE WI
2022-12-12 564-228 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ABERDEEN WA
2022-12-12 828-780 0XXX1XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - NC 638E BAKERSVL NC
2022-12-12 856-538 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 BRIDGETON NJ
2022-12-12 862-412 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 NEWARK NJ
2022-12-12 984-318 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E RALEIGH NC
2022-12-09 216-490 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDEPNDNCE OH
2022-12-09 385-509 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F SALT LAKE UT
2022-12-09 669-325 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNJS WEST CA
2022-12-09 732-467 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
2022-12-09 873-986 not yet reported which blocks → TELUS Quebec 2243 Tingwick —
2022-12-09 873-987 not yet reported which blocks → TELUS Quebec 2243 Cheneville —
2022-12-09 979-350 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 GIDDINGS TX
2022-12-09 980-378 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CHARLOTTE NC
2022-12-09 984-314 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CHAPELHILL NC
2022-12-09 984-317 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E DURHAM NC
2022-12-09 986-286 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - ID 689F CALDWELL ID
2022-12-08 239-408 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NO NAPLES FL
2022-12-08 269-380 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATTLE CRK MI
2022-12-08 314-217 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2022-12-08 440-531 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 BEREA OH
2022-12-08 440-894 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C ELYRIA OH
2022-12-08 472-205 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAURINBURG NC
2022-12-08 513-610 0XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 SEVEN MILE OH
2022-12-08 513-859 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CINCINNATI OH
2022-12-08 513-930 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CINCINNATI OH
2022-12-08 513-937 0–9 XXXwhole prefix which blocks → ONVOY, LLC - OH 464C CINCINNATI OH
2022-12-08 561-916 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BOYNTONBCH FL
2022-12-08 562-614 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2022-12-08 608-814 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BELOIT WI
2022-12-08 608-815 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 JANESVILLE WI
2022-12-08 608-817 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - WI 007F MADISON WI
2022-12-08 608-861 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 PACKWAUKEE WI
2022-12-08 615-914 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F FRANKLIN TN
2022-12-08 618-812 0–9 XXXwhole prefix which blocks → ONVOY, LLC 224C IUKA IL
2022-12-08 618-903 0XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J DORCHESTER IL
2022-12-08 618-904 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BALDWIN IL
2022-12-08 618-905 0XXX1XXX7XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 LEBANON IL
2022-12-08 618-906 0XXX9XXX · 2 holders which blocks → METROPCS, INC. 5562 DUPO IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.