NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 561
BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 198
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 101
NEW CINGULAR WIRELESS PCS, LLC - GA 84
OMNIPOINT MIAMI E LICENSE, LLC 71
ONVOY, LLC - FL 48
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
2021-02-19 561-595 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-02-11 561-591 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-02-04 561-780 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H WPALMBEACH FL
2021-02-04 561-980 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BOCA RATON FL
2021-01-27 561-590 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2021-01-21 561-668 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H DELRAY BCH FL
2021-01-14 561-878 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C BELLEGLADE FL
2021-01-08 561-589 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2020-12-30 561-587 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2020-12-28 561-583 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-12-21 561-579 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-12-21 561-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C DELRAY BCH FL
2020-11-23 561-709 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C BOCA RATON FL
2020-10-23 561-576 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J BOCA RATON FL
2020-10-16 561-559 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2020-10-07 561-545 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2020-10-07 561-546 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-09-18 561-556 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C BOCA RATON FL
2020-09-16 561-539 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-09-14 561-538 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-09-03 561-532 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 JUPITER FL
2020-08-28 561-298 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2020-08-28 561-524 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2020-08-28 561-525 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-08-27 561-528 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2020-08-20 561-527 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-08-05 561-593 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2020-08-04 561-592 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-07-16 561-867 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H WPALMBEACH FL
2020-06-29 561-519 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-06-16 561-861 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PAHOKEE FL
2020-06-09 561-497 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-05-19 561-492 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-05-05 561-481 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-04-30 561-564 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BOCA RATON FL
2020-04-30 561-621 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WPALMBEACH FL
2020-04-29 561-467 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2020-03-13 561-490 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2020-03-10 561-489 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2020-02-04 561-486 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2019-11-12 561-485 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2019-11-05 561-661 not yet reported which blocks → RIGHT CALL LLC 365J BOCA RATON FL
2019-11-05 561-761 not yet reported which blocks → RIGHT CALL LLC 365J WPALMBEACH FL
2019-08-08 561-565 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C BOCA RATON FL
2019-06-03 561-677 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H JUPITER FL
2019-06-03 561-678 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BOYNTONBCH FL
2019-06-03 561-933 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DELRAY BCH FL
2019-06-03 561-944 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H BELLEGLADE FL
2019-05-22 561-476 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2019-05-22 561-725 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H WPALMBEACH FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.