NumberResearch Membership · Data 2026-04

Recent prefix assignments

352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
8X8, INC. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 31
NEW CINGULAR WIRELESS PCS, LLC - DC 30
ONVOY, LLC - CA 28
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-NXXAssigneeOCNRate centerState
787-335 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D MAYAGUEZ PR
787-336 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D MANATI PR
787-337 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D CAGUAS PR
787-338 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D BAYAMONNOR PR
787-339 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D SANTURCE PR
787-340 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-342 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-343 PUERTO RICO TEL. CO. 3201 XXXXXXXXXX PR
787-344 SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
787-347 METROPCS, INC. 5562 SANTURCE PR
787-348 METROPCS, INC. 5562 SANTURCE PR
787-349 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-350 MR. BEEPER, INC. 4850 RIOPIEDRAS PR
787-351 MR. BEEPER, INC. 4850 RIOPIEDRAS PR
787-352 MR. BEEPER, INC. 4850 RIOPIEDRAS PR
787-353 MR. BEEPER, INC. 4850 RIOPIEDRAS PR
787-354 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-355 LIBERTY MOBILE PUERTO RICO INC. 8305 LUQUILLO PR
787-357 LIBERTY MOBILE PUERTO RICO INC. 8305 CABO ROJO PR
787-360 LIBERTY MOBILE PUERTO RICO INC. 639J RIOPIEDRAS PR
787-361 LIBERTY MOBILE PUERTO RICO INC. 639J GUAYNABO PR
787-362 LIBERTY MOBILE PUERTO RICO INC. 639J GUAYNABO PR
787-363 LIBERTY MOBILE PUERTO RICO INC. 639J GUAYNABO PR
787-364 METROPCS, INC. 5562 SANTURCE PR
787-365 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-366 LIBERTY MOBILE PUERTO RICO INC. 639J SANTURCE PR
787-368 SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
787-370 LIBERTY MOBILE PUERTO RICO INC. 639J RIOPIEDRAS PR
787-371 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-372 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR
787-373 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR
787-374 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-375 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-376 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-377 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR
787-378 LIBERTY MOBILE PUERTO RICO INC. 639J RIOPIEDRAS PR
787-379 LIBERTY MOBILE PUERTO RICO INC. 639J RIOPIEDRAS PR
787-380 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-381 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-382 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-383 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-384 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-385 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-386 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D SANTURCE PR
787-387 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR
787-388 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR
787-389 OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 087D HUMACAO PR
787-390 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-391 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 TRUJILLOAL PR
787-392 PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 SANTURCE PR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.