NumberResearchRecent thousands-block assignments
1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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, last 30 days — NPA 561
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2002-11-22 | 561-253-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | WPALMBEACH | FL |
| 2002-11-22 | 561-327-0XXX | 0000–0999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | BOYNTONBCH | FL |
| 2002-11-22 | 561-455-9XXX | 9000–9999 | Assigned | LEVEL 3 TELECOM OF FLORIDA, LP - FL | 7635 | DELRAY BCH | FL |
| 2002-09-16 | 561-202-6XXX | 6000–6999 | Assigned | FUSION CLOUD SERVICES, LLC | 206A | WPALMBEACH | FL |
| 2002-09-16 | 561-206-6XXX | 6000–6999 | Assigned | FUSION CLOUD SERVICES, LLC | 206A | BOCA RATON | FL |
| 2002-09-16 | 561-244-6XXX | 6000–6999 | Assigned | FUSION CLOUD SERVICES, LLC | 206A | BOYNTONBCH | FL |
| 2002-09-16 | 561-404-6XXX | 6000–6999 | Assigned | FUSION CLOUD SERVICES, LLC | 206A | DELRAY BCH | FL |
| 2002-06-19 | 561-209-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WPALMBEACH | FL |
| 2002-05-15 | 561-209-9XXX | 9000–9999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | WPALMBEACH | FL |
| 2002-05-15 | 561-277-7XXX | 7000–7999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | JUPITER | FL |
| 2002-05-15 | 561-424-4XXX | 4000–4999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | BOYNTONBCH | FL |
| 2002-05-15 | 561-455-5XXX | 5000–5999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | DELRAY BCH | FL |
| 2002-05-15 | 561-961-1XXX | 1000–1999 | Assigned | DSL INTERNET CORPORATION - FL | 9264 | BOCA RATON | FL |
| 2002-03-21 | 561-784-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2002-01-25 | 561-424-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | BOYNTONBCH | FL |
| 2002-01-25 | 561-768-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | JUPITER | FL |
| 2001-11-20 | 561-514-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-11-20 | 561-514-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-11-20 | 561-514-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-11-20 | 561-514-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-11-09 | 561-450-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | DELRAY BCH | FL |
| 2001-11-07 | 561-210-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL | 8664 | BOCA RATON | FL |
| 2001-10-18 | 561-869-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | BOCA RATON | FL |
| 2001-10-18 | 561-869-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | BOCA RATON | FL |
| 2001-08-23 | 561-244-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | BOYNTONBCH | FL |
| 2001-08-07 | 561-829-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | BELLEGLADE | FL |
| 2001-06-14 | 561-208-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | BOCA RATON | FL |
| 2001-06-05 | 561-207-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-207-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-656-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-656-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-656-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-656-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-868-0XXX | 0000–0999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-868-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-868-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-868-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-05 | 561-868-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-04 | 561-656-0XXX | 0000–0999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-04 | 561-656-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-04 | 561-656-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-06-04 | 561-656-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-05-31 | 561-209-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | WPALMBEACH | FL |
| 2001-05-31 | 561-784-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 9417 | WPALMBEACH | FL |
| 2001-05-17 | 561-202-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | WPALMBEACH | FL |
| 2001-05-02 | 561-455-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | DELRAY BCH | FL |
| 2001-04-20 | 561-208-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | BOCA RATON | FL |
| 2001-04-20 | 561-450-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | DELRAY BCH | FL |
| 2001-04-09 | 561-277-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | JUPITER | FL |
| 2001-04-05 | 561-509-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | BOYNTONBCH | FL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.