NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 787
SUNCOM DBA T-MOBILE USA 655
LIBERTY MOBILE PUERTO RICO INC. 329
LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 165
WORLDNET TELECOMMUNICATIONS, INC. - PR 106
NEUTRAL TANDEM - PR 63
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-05-30 787-849-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 HORMIGUERO PR
2007-05-30 787-861-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 MAUNABO PR
2007-05-30 787-928-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 PENUELAS PR
2007-05-30 787-992-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 YAUCO PR
2007-05-22 787-689-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-05-22 787-689-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-05-22 787-689-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-05-22 787-689-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-05-22 787-951-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2007-05-18 787-629-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2007-05-18 787-904-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 MANATI PR
2007-05-15 787-592-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GUAYAMA PR
2007-05-15 787-680-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 ARECIBO PR
2007-05-15 787-694-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CAYEY PR
2007-05-15 787-921-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 MANATI PR
2007-05-15 787-931-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 AGUADILLA PR
2007-05-14 787-221-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2007-05-14 787-224-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2007-05-08 787-719-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 HUMACAO PR
2007-05-04 787-266-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 YABUCOA PR
2007-05-04 787-280-9XXX 9000–9999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANSBSTIAN PR
2007-05-04 787-355-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LUQUILLO PR
2007-05-04 787-369-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 MOROVIS PR
2007-05-04 787-434-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CIDRA PR
2007-05-04 787-465-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 NAGUABO PR
2007-05-04 787-544-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CAMUY PR
2007-05-04 787-561-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 JUNCOS PR
2007-05-04 787-693-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 COROZAL PR
2007-05-04 787-695-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 COMERIO PR
2007-05-04 787-699-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 BARRANQUTS PR
2007-05-04 787-709-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2007-05-04 787-712-2XXX 2000–2999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GURABO PR
2007-05-04 787-715-5XXX 5000–5999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANLORENZO PR
2007-05-04 787-716-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LASPIEDRAS PR
2007-05-04 787-814-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 UTUADO PR
2007-05-04 787-822-6XXX 6000–6999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 FLORIDA PR
2007-05-04 787-915-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 VEGA ALTA PR
2007-05-04 787-924-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 AGUASBUNAS PR
2007-05-04 787-970-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 BARCELONTA PR
2007-05-04 787-991-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 AIBONITO PR
2007-04-24 787-341-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2007-04-24 787-909-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2007-04-17 787-341-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2007-04-06 787-200-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2007-04-06 787-919-3XXX 3000–3999Assigned NEUTRAL TANDEM - PR 559F SANTURCE PR
2007-03-26 787-909-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2007-03-16 787-718-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2007-03-08 787-595-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2007-02-27 787-341-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2007-02-27 787-678-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.