NumberResearchRecent prefix assignments
1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 719-867 | not yet reported which blocks → | LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | COLORDOSPG | CO |
| — | 719-868 | 7XXX8XXX9XXX · 3 holders which blocks → | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | WESTON | CO |
| — | 719-873 | 3XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9636 | DEL NORTE | CO |
| — | 719-884 | 6XXX which blocks → | LEVEL 3 TELECOM OF COLORADO, LLC - CO | 7590 | COLORDOSPG | CO |
| — | 719-886 | not yet reported which blocks → | BANDWIDTH.COM CLEC, LLC - CO | 078F | COLORDOSPG | CO |
| — | 719-890 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | WALSENBURG | CO |
| — | 719-892 | 1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks → | N.E. COLORADO CELLULAR, INC. | 6874 | LIMON | CO |
| — | 719-896 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | METROPCS, INC. | 5562 | COLORDOSPG | CO |
| — | 719-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CO |
| — | 719-921 | not yet reported which blocks → | AMERICAN MESSAGING SERVICES, LLC | 9748 | COLORDOSPG | CO |
| — | 719-924 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | PUEBLO | CO |
| — | 719-930 | 0XXX2XXX which blocks → | T-MOBILE USA, INC. | 6529 | COLORDOSPG | CO |
| — | 719-931 | 0–9 XXXall 10 · 5 holders which blocks → | ONVOY, LLC - CO | 026D | LAMAR | CO |
| — | 719-940 | 3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAMAR | CO |
| — | 719-941 | 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9636 | AGUILAR | CO |
| — | 719-942 | 0XXX1XXX6XXX7XXX · 4 holders which blocks → | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | HOWARD | CO |
| — | 719-946 | 1XXX2XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → | CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | BRANSON | CO |
| — | 719-947 | 2XXX5XXX which blocks → | QWEST CORPORATION | 9636 | PUEBLO | CO |
| — | 719-948 | 7XXX8XXX · 2 holders which blocks → | QWEST CORPORATION | 9636 | PUEBLO | CO |
| — | 719-950 | not yet reported which blocks → | CO | |||
| — | 719-955 | 8XXX which blocks → | LEVEL 3 TELECOM OF COLORADO, LLC - CO | 7590 | COLORDOSPG | CO |
| — | 719-958 | not yet reported which blocks → | CO | |||
| — | 719-959 | not yet reported which blocks → | CO | |||
| — | 719-962 | not yet reported which blocks → | EASTERN SLOPE RURAL TEL. ASSN., INC. | 2186 | KIT CARSON | CO |
| — | 719-963 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | COLORDOSPG | CO |
| — | 719-964 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | COLORDOSPG | CO |
| — | 719-976 | not yet reported which blocks → | CO | |||
| — | 719-980 | 6XXX7XXX8XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LA JUNTA | CO |
| — | 719-989 | 2XXX3XXX5XXX6XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | WALSENBURG | CO |
| — | 719-994 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PUEBLO | CO |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.