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 808
HAWAIIAN TELCOM, INC. - HI 309
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
2012-03-20 808-278 0–9 XXXall 10 · 6 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
2012-03-20 808-515 0–9 XXXall 10 · 4 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LANAI CITY HI
2012-03-20 808-556 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 KAUNAKAKAI HI
2012-03-20 808-799 0–9 XXXall 10 · 3 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
2012-03-20 808-866 0–9 XXXall 10 · 3 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
2012-03-19 808-365 0–9 XXXall 10 · 5 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
2004-01-10 808-454 3XXX7XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
2002-11-07 808-434 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-230 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-232 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-233 8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-234 3XXX4XXX8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-235 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-236 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-237 0XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-239 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-240 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-241 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-242 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-243 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-244 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-245 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-246 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-247 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-248 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-249 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-253 1XXX8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-254 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-257 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-259 1XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-261 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-262 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-263 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-266 0XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-270 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-274 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-275 3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-293 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-296 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-322 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-323 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-324 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-325 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-326 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-327 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-328 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-329 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-331 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
— 808-332 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LIHUE HI
— 808-334 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI

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.