NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

70 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 667
NEW CINGULAR WIRELESS PCS, LLC - DC 38
ONVOY, LLC - MD 18
BANDWIDTH.COM CLEC, LLC - MD 6
METROPCS, INC. 2
INTRADO COMMUNICATIONS, LLC 2
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
2022-12-16 667-422-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-16 667-422-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BALTIMORE MD
2022-12-15 667-342-8XXX 8000–8999Assigned ONVOY, LLC - MD 876D PRESTON MD
2022-12-08 667-853-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J POCOMOKE MD
2022-11-28 667-398-9XXX 9000–9999Assigned TELNYX LLC 073H PT DEPOSIT MD
2022-11-23 667-420-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J FEDERALSBG MD
2022-11-21 667-359-4XXX 4000–4999Assigned ONVOY, LLC - MD 876D COLUMBIA MD
2022-11-15 667-877-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-15 667-877-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-15 667-877-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-15 667-877-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-15 667-877-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-15 667-877-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PIKESVILLE MD
2022-11-08 667-419-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-08 667-419-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-07 667-268-7XXX 7000–7999Assigned ONVOY, LLC - MD 876D DARLINGTON MD
2022-11-07 667-317-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PRINCEANNE MD
2022-11-07 667-342-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D PRESTON MD
2022-11-04 667-369-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-369-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-04 667-626-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2022-11-02 667-418-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 GREENSBORO MD
2022-10-31 667-338-5XXX 5000–5999Assigned ONVOY, LLC - MD 876D CROFTON MD
2022-10-31 667-341-0XXX 0000–0999Assigned ONVOY, LLC - MD 876D DELMAR MD
2022-10-31 667-413-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-413-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ARGRGBSNIS MD
2022-10-31 667-853-5XXX 5000–5999Assigned CHARTER IP ENABLED SERVICES, LLC 792K POCOMOKE MD
2022-10-27 667-276-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BEL AIR MD
2022-10-27 667-418-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J GREENSBORO MD
2022-10-25 667-279-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 BISHOPVL MD
2022-10-25 667-293-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 SHARPTOWN MD
2022-10-25 667-302-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - MD 6119 CECILTON MD

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.