NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 360
TELEPORT COMMUNICATIONS AMERICA, LLC - WA 49
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
2015-09-21 360-784 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 VANCOUVER WA
2011-10-04 360-994 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 POULSBO WA
2001-04-23 360-851 0XXX1XXX4XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BLACKDIMND WA
— 360-230 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MT VERNON WA
— 360-233 2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELFAIR WA
— 360-234 2XXX3XXX4XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BUCKLEY WA
— 360-237 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 CENTRALIA WA
— 360-242 3XXX4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 CHEHALIS WA
— 360-246 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 OAK HARBOR WA
— 360-248 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 CRYSTAL MT WA
— 360-251 0XXX4XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-252 0XXX3XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 OLYMPIA WA
— 360-258 none assigned yet which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 VANCOUVER WA
— 360-272 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 ENUMCLAW WA
— 360-283 5XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-285 3XXX4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 HOODSPORT WA
— 360-287 0XXX1XXX4XXX5XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-294 4XXX8XXX9XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SNOHOMISH WA
— 360-325 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-329 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 PORT ORCH WA
— 360-343 none assigned yet which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 PORTLUDLOW WA
— 360-347 1XXX2XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 ROCHESTER WA
— 360-351 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 PT ANGELES WA
— 360-358 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SHELTON WA
— 360-361 8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SKYKOMISH WA
— 360-363 0XXX4XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-365 5XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SNOHOMISH WA
— 360-368 3XXX4XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WINLOCK WA
— 360-392 5XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-395 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MT VERNON WA
— 360-406 0XXX1XXX4XXX5XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 PT ANGELES WA
— 360-530 0XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-535 0XXX1XXX2XXX3XXX4XXX7XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SILVERDALE WA
— 360-624 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 VANCOUVER WA
— 360-656 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-682 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 OAK HARBOR WA
— 360-684 0XXX1XXX2XXX3XXX4XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-685 1XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-723 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BATTLEGRND WA
— 360-727 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 RIDGEFIELD WA
— 360-814 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MT VERNON WA
— 360-824 0XXX1XXX2XXX3XXX5XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BREMERTON WA
— 360-828 none assigned yet which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 VANCOUVER WA
— 360-922 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-925 0XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 MARYSVILLE WA
— 360-933 0XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-935 0XXX1XXX2XXX4XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-937 4XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 WHATCOMCTY WA
— 360-954 0XXX1XXX2XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 CAMAS 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.