NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — NPA 713
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-05-19 | 713-492-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2004-05-19 | 713-492-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2004-05-19 | 713-636-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2004-05-19 | 713-636-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2004-05-19 | 713-636-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2004-04-20 | 713-456-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOUSTON | TX |
| 2004-03-04 | 713-289-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2004-02-10 | 713-493-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2004-02-10 | 713-493-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2004-02-10 | 713-493-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-12-11 | 713-384-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-12-11 | 713-384-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-12-11 | 713-384-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-11-12 | 713-231-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-11-12 | 713-231-2XXX | 2000–2999 | Assigned | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7074 | HOUSTON | TX |
| 2003-10-27 | 713-232-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-10-27 | 713-259-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-10-27 | 713-283-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-10-07 | 713-636-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2003-10-07 | 713-636-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOUSTON | TX |
| 2003-09-29 | 713-245-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-08-04 | 713-418-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-07-29 | 713-979-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-2XXX | 2000–2999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-3XXX | 3000–3999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-29 | 713-979-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TX | 903C | HOUSTON | TX |
| 2003-07-18 | 713-292-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-07-18 | 713-292-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-07-18 | 713-296-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-2XXX | 2000–2999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-3XXX | 3000–3999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-06-20 | 713-550-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | HOUSTON | TX |
| 2003-02-27 | 713-893-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LEAGUECITY | TX |
| 2002-11-14 | 713-456-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2002-11-14 | 713-456-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2002-11-14 | 713-456-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2002-11-14 | 713-456-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | HOUSTON | TX |
| 2002-10-22 | 713-589-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
| 2002-10-22 | 713-589-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | HOUSTON | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.