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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-05-18 413-707-2XXX 2000–2999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-3XXX 3000–3999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-4XXX 4000–4999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-5XXX 5000–5999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-7XXX 7000–7999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-8XXX 8000–8999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-18 413-707-9XXX 9000–9999Assigned ONVOY, LLC - MA 892D SPRINGFLD MA
2016-05-13 413-570-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2016-05-10 413-664-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHADAMS MA
2016-05-10 413-813-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WARE MA
2016-04-22 413-824-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GREENFIELD MA
2016-04-06 413-333-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2016-03-18 413-417-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD MA
2016-02-25 413-662-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHADAMS MA
2016-02-18 413-417-3XXX 3000–3999Assigned METROPCS, INC. 5562 SPRINGFLD MA
2016-02-18 413-417-4XXX 4000–4999Assigned METROPCS, INC. 5562 SPRINGFLD MA
2016-02-18 413-557-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2016-02-18 413-557-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 CHICOPEE MA
2016-02-18 413-828-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J GREENFIELD MA
2016-02-17 413-203-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 EASTHAMPTN MA
2016-02-17 413-727-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORTHAMPTN MA
2016-02-11 413-356-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHICOPEE MA
2016-02-05 413-333-0XXX 0000–0999Assigned PAETEC ITEL, LLC 829J SPRINGFLD MA
2016-02-05 413-417-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD MA
2016-02-02 413-417-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 SPRINGFLD MA
2015-12-30 413-310-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2015-12-18 413-770-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PITTSFIELD MA
2015-12-02 413-800-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 AMHERST MA
2015-11-05 413-644-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GREATBNGTN MA
2015-10-28 413-544-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PALMER MA
2015-10-19 413-279-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WILBRAHAM MA
2015-10-08 413-270-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2015-10-08 413-333-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SPRINGFLD MA
2015-10-08 413-337-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - MA 990E CHARLEMONT MA
2015-10-08 413-378-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHICOPEE MA
2015-10-01 413-333-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2015-10-01 413-768-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GREENFIELD MA
2015-09-18 413-935-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LONGMEADOW MA
2015-09-14 413-333-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2015-09-08 413-308-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LUDLOW MA
2015-09-04 413-267-7XXX 7000–7999Assigned TC SYSTEMS, INC. 7135 MONSON MA
2015-09-02 413-564-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WESTFIELD MA
2015-08-28 413-356-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHICOPEE MA
2015-08-06 413-270-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NORTHAMPTN MA
2015-08-03 413-259-0XXX 0000–0999Assigned ONVOY, LLC - MA 892D AMHRSTFKLN MA
2015-08-03 413-402-1XXX 1000–1999Assigned ONVOY, LLC - MA 892D SHEFFIELD MA
2015-08-03 413-551-6XXX 6000–6999Assigned ONVOY, LLC - MA 892D LENOX MA
2015-07-28 413-725-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J WARE MA
2015-07-23 413-893-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MONSON 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.