All assignees
800 prefixes in 508 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 508-900 | XXXXXXXXXX | 9102 | — | — |
| 508-901 | NANTUCKET | 829J | — | Yes |
| 508-902 | MILFORD | 829J | — | Yes |
| 508-903 | NATICK | 7135 | — | Yes |
| 508-904 | FRAMINGHAM | 6889 | — | — |
| 508-905 | WELLFLEET | 892D | — | Yes |
| 508-906 | MEDFIELD | 7229 | — | Yes |
| 508-907 | NATICK | 829J | — | Yes |
| 508-908 | — | — | ||
| 508-909 | SOUTHBDG | 829J | — | Yes |
| 508-910 | NEWBEDFORD | 9102 | — | — |
| 508-911 | XXXXXXXXXX | MULT | — | — |
| 508-912 | — | — | ||
| 508-913 | — | — | ||
| 508-914 | — | — | ||
| 508-915 | SOUTHGATE | 4018 | — | Yes |
| 508-916 | FALL RIVER | 4018 | — | Yes |
| 508-917 | MILLBURY | 829J | — | Yes |
| 508-918 | FRANKLIN | 7135 | 2001-02-21 | Yes |
| 508-919 | NORTHBORO | 829J | — | Yes |
| 508-920 | XXXXXXXXXX | 9102 | — | — |
| 508-921 | WALPOLE | 4018 | — | Yes |
| 508-922 | HOPKINTON | 5562 | — | Yes |
| 508-923 | MIDDLEBORO | 9102 | — | Yes |
| 508-924 | EBRIDGEWTR | 829J | — | Yes |
| 508-925 | SHREWSBURY | 7135 | — | Yes |
| 508-926 | WORCESTER | 7135 | — | Yes |
| 508-927 | PLYMOUTH | 7135 | — | Yes |
| 508-928 | BLACKSTONE | 318J | — | Yes |
| 508-929 | WORCESTER | 9102 | — | — |
| 508-930 | BROCKTON | 6387 | — | — |
| 508-931 | XXXXXXXXXX | 9102 | — | — |
| 508-932 | BEVERLY | 4036 | — | — |
| 508-933 | ROCHESTER | 5562 | 2008-07-23 | Yes |
| 508-934 | DOVER | 4018 | — | Yes |
| 508-935 | FRAMINGHAM | 9102 | — | Yes |
| 508-936 | NORTHBORO | 4018 | — | Yes |
| 508-937 | BELLINGHAM | 829J | — | — |
| 508-938 | WESTPORT | 4018 | — | Yes |
| 508-939 | EDGARTOWN | 9102 | — | Yes |
| 508-940 | — | — | ||
| 508-941 | BROCKTON | 9102 | — | Yes |
| 508-942 | BROCKTON | 6387 | — | — |
| 508-943 | WEBSTER | 9102 | — | — |
| 508-944 | BROCKTON | 6387 | — | — |
| 508-945 | CHATHAM | 9102 | — | — |
| 508-946 | MIDDLEBORO | 9102 | — | — |
| 508-947 | MIDDLEBORO | 9102 | — | — |
| 508-948 | WESTBORO | 7135 | — | Yes |
| 508-949 | WEBSTER | 9102 | — | — |
| 508-950 | — | — | ||
| 508-951 | NEWBEDFORD | 6387 | — | — |
| 508-952 | NORTON | 7135 | — | Yes |
| 508-953 | XXXXXXXXXX | 9102 | — | — |
| 508-954 | WRENTHAM | 6387 | — | — |
| 508-955 | CHILMARK | 990E | — | Yes |
| 508-956 | WORCESTER | 9102 | — | — |
| 508-957 | HYANNIS | 9102 | — | Yes |
| 508-958 | HOPKINTON | 5562 | — | Yes |
| 508-959 | XXXXXXXXXX | MULT | — | — |
| 508-960 | NATICK | 4018 | — | Yes |
| 508-961 | NEWBEDFORD | 9102 | — | Yes |
| 508-962 | FRAMINGHAM | 6889 | — | Yes |
| 508-963 | WORCESTER | 5562 | 2001-02-14 | Yes |
| 508-964 | MANSFIELD | 990E | — | Yes |
| 508-965 | NEWBEDFORD | 6387 | — | — |
| 508-966 | BELLINGHAM | 9102 | — | Yes |
| 508-967 | TAUNTON | 829J | — | Yes |
| 508-968 | CATAUMET | 9102 | — | — |
| 508-969 | FRAMINGHAM | 4018 | — | Yes |
| 508-970 | MARLBORO | 829J | — | Yes |
| 508-971 | NEWBEDFORD | 4036 | — | — |
| 508-972 | NEWBEDFORD | 6387 | — | Yes |
| 508-973 | FALL RIVER | 9102 | 2010-05-14 | Yes |
| 508-974 | FALL RIVER | 6889 | — | Yes |
| 508-975 | NATICK | 4018 | — | Yes |
| 508-976 | — | — | ||
| 508-977 | TAUNTON | 9102 | — | Yes |
| 508-978 | TAUNTON | 892D | 2023-05-26 | Yes |
| 508-979 | NEWBEDFORD | 9102 | — | Yes |
| 508-980 | CHARLTON | 829J | — | Yes |
| 508-981 | WORCESTER | 4036 | — | — |
| 508-982 | LAWRENCE | 5562 | — | Yes |
| 508-983 | WESTBORO | 7229 | — | Yes |
| 508-984 | NEWBEDFORD | 9102 | — | Yes |
| 508-985 | NEWBEDFORD | 9102 | — | Yes |
| 508-986 | WESTBORO | 829J | — | Yes |
| 508-987 | OXFORD | 9102 | — | Yes |
| 508-988 | FRAMINGHAM | 9102 | — | Yes |
| 508-989 | FALL RIVER | 5562 | 2001-02-14 | Yes |
| 508-990 | NEWBEDFORD | 9102 | — | Yes |
| 508-991 | NEWBEDFORD | 9102 | — | Yes |
| 508-992 | NEWBEDFORD | 9102 | — | — |
| 508-993 | NEWBEDFORD | 9102 | — | — |
| 508-994 | NEWBEDFORD | 9102 | — | — |
| 508-995 | NEWBEDFORD | 9102 | — | — |
| 508-996 | NEWBEDFORD | 9102 | — | — |
| 508-997 | NEWBEDFORD | 9102 | — | — |
| 508-998 | NEWBEDFORD | 9102 | — | — |
| 508-999 | NEWBEDFORD | 9102 | — | — |
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.