All assignees
782 prefixes in 313 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 313-903 | DETROITZN6 | 2964 | — | — |
| 313-904 | DETROITZN6 | 6534 | 2026-04-01 | Yes |
| 313-907 | DETROITZN5 | 6534 | 2026-04-01 | Yes |
| 313-908 | DETROITZN6 | 6534 | — | Yes |
| 313-909 | DETROITZN5 | 6003 | — | — |
| 313-910 | DETROITZN5 | 6003 | — | — |
| 313-911 | XXXXXXXXXX | MULT | — | — |
| 313-912 | DETROITZN5 | 6003 | — | Yes |
| 313-913 | DETROITZN1 | 2964 | 2016-08-18 | Yes |
| 313-914 | DETROITZN6 | 6534 | — | Yes |
| 313-915 | DETROITZN4 | 7279 | — | Yes |
| 313-916 | DETROITZN1 | 9323 | — | — |
| 313-917 | DETROITZN5 | 6534 | — | — |
| 313-918 | DETROITZN1 | 5562 | 2006-02-01 | Yes |
| 313-919 | DETROITZN5 | 6003 | — | Yes |
| 313-920 | DETROITZN5 | 6003 | — | — |
| 313-921 | DETROITZN2 | 9323 | — | Yes |
| 313-922 | DETROITZN2 | 9323 | — | Yes |
| 313-923 | DETROITZN2 | 9323 | — | Yes |
| 313-924 | DETROITZN2 | 9323 | — | Yes |
| 313-925 | DETROITZN2 | 9323 | — | Yes |
| 313-926 | DETROITZN2 | 9323 | — | Yes |
| 313-927 | DETROITZN4 | 9323 | — | Yes |
| 313-928 | DETROITZN6 | 9323 | — | — |
| 313-929 | DETROITZN5 | 6534 | — | — |
| 313-930 | DETROITZN5 | 6534 | 2001-05-25 | Yes |
| 313-931 | DETROITZN4 | 9323 | — | — |
| 313-932 | DETROITZN5 | 2964 | 2010-07-28 | Yes |
| 313-933 | DETROITZN4 | 9323 | — | — |
| 313-934 | DETROITZN4 | 9323 | — | Yes |
| 313-935 | DETROITZN4 | 9323 | — | Yes |
| 313-936 | DETROITZN2 | 2964 | 2014-11-24 | Yes |
| 313-937 | DETROITZN5 | 9323 | — | Yes |
| 313-938 | DETROITZN5 | 6003 | — | — |
| 313-939 | DETROITZN2 | 2964 | 2014-09-02 | Yes |
| 313-940 | DETROITZN5 | 6630 | — | — |
| 313-941 | DETROITZN6 | 6534 | 2026-05-27 | Yes |
| 313-942 | DETROITZN5 | 6534 | 2001-08-06 | Yes |
| 313-943 | DETROITZN6 | 9323 | — | — |
| 313-944 | DETROITZN2 | 965H | 2021-04-02 | Yes |
| 313-945 | DETROITZN6 | 9323 | — | — |
| 313-946 | DETROITZN2 | 965H | 2019-12-19 | Yes |
| 313-948 | DETROITZN5 | 5562 | — | Yes |
| 313-949 | DETROITZN5 | 6003 | — | — |
| 313-950 | — | — | ||
| 313-952 | DETROITZN5 | 7279 | — | Yes |
| 313-953 | DETROITZN5 | 2964 | 2010-09-13 | Yes |
| 313-955 | DETROITZN2 | 5562 | 2020-06-04 | Yes |
| 313-956 | DETROITZN3 | 9323 | — | — |
| 313-957 | DETROITZN3 | 9323 | — | Yes |
| 313-958 | DETROITZN5 | 6630 | — | — |
| 313-959 | — | — | ||
| 313-960 | DETROITZN1 | 2964 | 2014-07-23 | Yes |
| 313-961 | DETROITZN1 | 9323 | — | — |
| 313-962 | DETROITZN1 | 9323 | — | — |
| 313-963 | DETROITZN1 | 9323 | — | — |
| 313-964 | DETROITZN1 | 9323 | — | — |
| 313-965 | DETROITZN1 | 9323 | — | — |
| 313-966 | DETROITZN1 | 9323 | — | — |
| 313-967 | DETROITZN1 | 9323 | — | — |
| 313-969 | DETROITZN5 | 6003 | — | Yes |
| 313-970 | DETROITZN5 | 6534 | — | Yes |
| 313-971 | DETROITZN5 | 2964 | — | Yes |
| 313-972 | DETROITZN1 | 9323 | — | — |
| 313-974 | DETROITZN1 | 9323 | — | Yes |
| 313-976 | XXXXXXXXXX | MULT | — | — |
| 313-977 | DETROITZN5 | 6534 | — | Yes |
| 313-978 | DETROITZN5 | 6534 | — | Yes |
| 313-979 | DETROITZN2 | 2964 | 2015-05-21 | Yes |
| 313-980 | DETROITZN5 | 6534 | — | — |
| 313-982 | DETROITZN6 | 9323 | — | Yes |
| 313-983 | DETROITZN1 | 9323 | — | Yes |
| 313-985 | DETROITZN3 | 2964 | 2015-01-26 | Yes |
| 313-986 | DETROITZN5 | 6003 | — | Yes |
| 313-989 | DETROITZN1 | 7279 | — | Yes |
| 313-990 | DETROITZN5 | 9748 | — | — |
| 313-992 | DETROITZN5 | 933G | 2015-10-01 | Yes |
| 313-993 | DETROITZN1 | 9323 | — | — |
| 313-995 | DETROITZN6 | 2964 | — | Yes |
| 313-996 | DETROITZN6 | 9323 | — | Yes |
| 313-998 | DETROITZN1 | 543C | 2020-09-08 | Yes |
| 313-999 | DETROITZN6 | 2964 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.