NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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, last 30 days — NPA 413
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6
BANDWIDTH.COM CLEC, LLC - MA 5
NEW CINGULAR WIRELESS PCS, LLC - DC 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
AHOI LLC 1
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-09-22 413-770-5XXX 5000–5999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-09 413-212-5XXX 5000–5999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-09 413-242-3XXX 3000–3999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-09 413-242-5XXX 5000–5999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-09 413-242-7XXX 7000–7999Assigned METROPCS, INC. 5562 PITTSFIELD MA
2021-09-09 413-408-0XXX 0000–0999Assigned COMMIO, LLC 939H EASTHAMPTN MA
2021-09-09 413-408-1XXX 1000–1999Assigned COMMIO, LLC 939H EASTHAMPTN MA
2021-09-09 413-408-8XXX 8000–8999Assigned COMMIO, LLC 939H EASTHAMPTN MA
2021-09-09 413-419-2XXX 2000–2999Assigned COMMIO, LLC 939H CHICOPEE MA
2021-09-09 413-419-3XXX 3000–3999Assigned COMMIO, LLC 939H CHICOPEE MA
2021-09-09 413-419-4XXX 4000–4999Assigned COMMIO, LLC 939H CHICOPEE MA
2021-09-09 413-614-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J NORTHAMPTN MA
2021-09-09 413-614-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J NORTHAMPTN MA
2021-09-09 413-640-8XXX 8000–8999Assigned METROPCS, INC. 5562 PALMER MA
2021-09-03 413-419-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHICOPEE MA
2021-09-03 413-419-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHICOPEE MA
2021-08-26 413-393-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTFIELD MA
2021-08-25 413-486-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E ELONGMEDOW MA
2021-08-25 413-514-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E HAMPDEN MA
2021-08-17 413-430-1XXX 1000–1999Assigned COMMIO, LLC 939H HOLYOKE MA
2021-08-17 413-430-8XXX 8000–8999Assigned COMMIO, LLC 939H HOLYOKE MA
2021-08-06 413-766-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-766-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-861-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-910-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-06 413-910-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SPRINGFLD MA
2021-08-03 413-255-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H GRANBY MA
2021-08-03 413-305-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D SOUTHWICK MA
2021-07-30 413-428-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2021-07-30 413-428-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2021-07-30 413-428-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2021-07-29 413-259-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H AMHRSTFKLN MA
2021-07-29 413-399-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 AMHERST MA
2021-07-29 413-415-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H AMHRSTFKLN MA
2021-07-29 413-465-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H HATFIELD MA
2021-07-29 413-823-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H WORTHINGTN MA
2021-06-30 413-465-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D HATFIELD MA
2021-06-29 413-206-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHICOPEE MA
2021-06-29 413-378-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-06-29 413-419-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-06-29 413-419-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-06-29 413-594-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2021-06-18 413-408-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D EASTHAMPTN MA

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.