NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 252-980 not yet reported which blocks → NC
— 252-984 not yet reported which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 ROCKYMOUNT NC
— 252-985 none assigned yet which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 ROCKYMOUNT NC
— 252-986 3XXX5XXX7XXX8XXX · 4 holders which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 BUXTON NC
— 252-987 4XXX5XXX7XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 WAVES NC
— 252-988 not yet reported which blocks → NC
— 252-995 none assigned yet which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 BUXTON NC
— 252-996 3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 BUXTON NC
— 253-202 none assigned yet which blocks → T-MOBILE USA, INC. 6529 TACOMAWVLY WA
— 253-203 4XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J TACOMA WA
— 253-205 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 AUBURN WA
— 253-206 not yet reported which blocks → WA
— 253-207 not yet reported which blocks → QWEST CORPORATION 9638 TACOMA WA
— 253-208 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
— 253-209 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
— 253-210 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GRAHAM WA
— 253-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX WA
— 253-216 2XXX3XXX4XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J KENT WA
— 253-219 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
— 253-220 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
— 253-221 none assigned yet which blocks → METROPCS, INC. 5562 TACOMAWVLY WA
— 253-225 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
— 253-226 not yet reported which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
— 253-227 not yet reported which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
— 253-228 not yet reported which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
— 253-229 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
— 253-230 not yet reported which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
— 253-231 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TACOMAWVLY WA
— 253-232 not yet reported which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
— 253-238 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TACOMA WA
— 253-239 0XXX2XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KENT WA
— 253-241 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
— 253-242 0XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
— 253-243 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - WA 483E KENT WA
— 253-261 none assigned yet which blocks → T-MOBILE USA, INC. 6529 AUBURN WA
— 253-262 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → RAINIER CONNECT, INC. - WA 7720 GRAHAM WA
— 253-265 4XXX5XXX7XXX9XXX · 2 holders which blocks → CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 2408 GIG HARBOR WA
— 253-269 2XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 AUBURN WA
— 253-270 not yet reported which blocks → ONVOY, LLC - WA 483E KENT WA
— 253-272 not yet reported which blocks → QWEST CORPORATION 9638 TACOMA WA
— 253-274 not yet reported which blocks → QWEST CORPORATION 9638 TACOMA WA
— 253-275 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 AUBURN WA
— 253-276 not yet reported which blocks → ONVOY, LLC - WA 483E TACOMA WA
— 253-278 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
— 253-279 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
— 253-280 not yet reported which blocks → QWEST CORPORATION 9638 TACOMA WA
— 253-284 6XXX which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 TACOMA WA
— 253-286 0XXX7XXX8XXX9XXX · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 PUYALLUP WA
— 253-288 not yet reported which blocks → QWEST CORPORATION 9638 AUBURN WA
— 253-289 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H AUBURN WA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.