NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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 26
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
2011-03-18 414-914 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-03-18 504-645 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KENNER LA
2011-03-18 581-235 not yet reported which blocks → TELUS Mobility 8303 Chicoutimi —
2011-03-18 613-743 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Belleville —
2011-03-18 614-576 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GAHANNA OH
2011-03-18 830-319 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EAGLE PASS TX
2011-03-18 903-607 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 TYLER TX
2011-03-18 909-295 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D ONTARIO CA
2011-03-18 918-936 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J TULSA OK
2011-03-18 978-403 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E LUNENBURG MA
2011-03-18 980-202 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 CHARLOTTE NC
2011-03-18 980-228 0–9 XXXall 10 · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 CHARLOTTE NC
2011-03-18 980-345 0–9 XXXall 10 · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 CHARLOTTE NC
2011-03-18 985-400 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COVINGTON LA
2011-03-17 204-217 not yet reported which blocks → Provincial Tel Inc. 498E Altona —
2011-03-17 204-300 not yet reported which blocks → Provincial Tel Inc. 498E Steinbach —
2011-03-17 204-439 not yet reported which blocks → Provincial Tel Inc. 498E Grunthal —
2011-03-17 205-500 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2011-03-17 218-774 0XXX1XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → WIKSTROM TELEPHONE COMPANY, INC. - MN 914F KENNEDY MN
2011-03-17 229-603 5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ALBANY GA
2011-03-17 234-522 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NO CANTON OH
2011-03-17 234-800 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MANCHESTR OH
2011-03-17 317-378 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J INDIANAPLS IN
2011-03-17 336-825 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 GREENSBORO NC
2011-03-17 513-635 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 CINCINNATI OH
2011-03-17 614-550 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 GROVEPORT OH
2011-03-17 805-332 0–9 XXXall 10 · 6 holders which blocks → FRONTIER CALIFORNIA INC. 2319 SANTAMARIA CA
2011-03-17 859-444 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COVINGTON KY
2011-03-17 902-202 not yet reported which blocks → Bragg Communications Inc. 421G Sydney —
2011-03-17 902-203 not yet reported which blocks → Bragg Communications Inc. 421G Shubenacadie —
2011-03-17 902-205 not yet reported which blocks → Bragg Communications Inc. 421G Saulnierville —
2011-03-17 902-515 not yet reported which blocks → Bragg Communications Inc. 421G Weymouth —
2011-03-17 902-616 not yet reported which blocks → Bragg Communications Inc. 421G New Glasgow —
2011-03-17 902-744 not yet reported which blocks → Bragg Communications Inc. 421G Parrsboro —
2011-03-17 902-777 not yet reported which blocks → Bragg Communications Inc. 421G Port Hawkesbury —
2011-03-17 902-788 not yet reported which blocks → Bragg Communications Inc. 421G Windsor —
2011-03-17 902-814 not yet reported which blocks → Bragg Communications Inc. 421G Truro —
2011-03-17 903-606 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 TYLER TX
2011-03-16 208-995 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BOISE ID
2011-03-16 315-766 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C SYRACUSE NY
2011-03-16 423-353 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J MORRISTOWN TN
2011-03-16 480-729 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2011-03-16 480-823 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2011-03-16 505-358 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALBUQURQUE NM
2011-03-16 513-301 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CINCINNATI OH
2011-03-16 604-651 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2011-03-16 604-652 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2011-03-16 604-653 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2011-03-16 604-655 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Vancouver —
2011-03-16 605-699 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - SD 106F BELLEFORCH SD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.