OCN 770E · Competitive Local Exchange Carrier
Teleport Communications America LLC - MI
d/b/a TCG Detroit
Part of the AT&T group — 74 OCNs across 54 states · 265,508 blocks combined.
Holding: AT&T Inc
Total blocks
1,005
Recent (18 mo)
21
Medium
35
Old
573
Area codes
12
States
1
Address
1 AT&T Way
Bedminster, NJ 07921-2693
1 AT&T Way
Bedminster, NJ 07921-2693
Website
AT&T
AT&T
First assigned block
2001-05-10
2001-05-10
Last assigned block
2025-11-14
2025-11-14
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HQ — Bedminster, NJ
Block portfolio at a glance
By age
- Recent (21) — last 18 mo
- Medium (35)
- Old (573)
- Undated (376)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- Michigan MI · 1,005 · 21
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Best vanity numbers from Teleport Communications America LLC - MI's recent issuances
Numbers in blocks issued in the last 18 months whose digits spell a useful word. Filter by state and category to find one for your business. ★ marks Mike's curated standouts.
| Number | Spells | Category | State | Block issued | Score |
|---|---|---|---|---|---|
| (989) 364-6368 ★ | EMINENT | Superlatives / Positive Adjectives | MI | 2025-01-03 | 1,065 |
| (947) 294-6884 ★ | AZIMUTH | Science / Laser / Space | MI | 2025-08-11 | 495 |
| (989) 364-6278 ★ | DOGMASTER | Veterinarian | MI | 2025-01-03 | 20 |
Want one of these or something similar? Request the number from this carrier and we'll route the request.
Most recent assignments
Last 18 months — these blocks were issued by Teleport Communications America LLC - MI since 2024-11-12.
| Number block | State | Rate center | Assigned |
|---|---|---|---|
| (734) 630-XXXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-0XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-1XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-2XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-3XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-4XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-5XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-6XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-7XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-8XXX | MI | Ann Arbor | 2025-11-14 |
| (734) 630-9XXX | MI | Ann Arbor | 2025-11-14 |
| (947) 294-5XXX | MI | Birmingham | 2025-10-30 |
| (947) 294-7XXX | MI | Birmingham | 2025-08-27 |
| (947) 294-8XXX | MI | Birmingham | 2025-08-27 |
| (947) 294-XXXX | MI | Birmingham | 2025-08-11 |
| (947) 294-6XXX | MI | Birmingham | 2025-08-11 |
| (313) 616-4XXX | MI | Detroitzn1 | 2025-06-09 |
| (947) 291-5XXX | MI | Birmingham | 2025-06-02 |
| (810) 854-XXXX | MI | Brighton | 2025-02-18 |
| (810) 854-8XXX | MI | Brighton | 2025-02-18 |
| (989) 364-6XXX | MI | Saginaw | 2025-01-03 |
Area codes
| NPA | Blocks | Recent | Last |
|---|---|---|---|
| 248 | 177 | — | 2023-08-09 |
| 734 | 150 | 11 | 2025-11-14 |
| 810 | 109 | 2 | 2025-02-18 |
| 313 | 96 | 1 | 2025-06-09 |
| 517 | 92 | — | 2023-10-03 |
| 947 | 88 | 6 | 2025-10-30 |
| 586 | 66 | — | 2021-12-23 |
| 989 | 60 | 1 | 2025-01-03 |
| 616 | 58 | — | 2023-08-01 |
| 231 | 50 | — | 2023-09-08 |
| 269 | 40 | — | 2024-08-14 |
| 906 | 19 | — | 2023-11-03 |
States
| State | Blocks | Recent |
|---|---|---|
| MI | 1,005 | 21 |
Sister OCNs in the AT&T group
Same customer-facing carrier, different state-registered OCN. Combined stats are on the AT&T group page.
Sister OCNs under AT&T Inc
| OCN | Company | Total | Recent |
|---|---|---|---|
| 6534 | New Cingular Wireless PCS LLC - IL | 58,704 | 6,972 |
| 6214 | New Cingular Wireless PCS LLC - GA | 40,046 | 5,569 |
| 6010 | New Cingular Wireless PCS LLC | 38,106 | 3,116 |
| 4036 | New Cingular Wireless PCS LLC - DC | 30,944 | 4,493 |
| 9533 | Southwestern Bell Telephone Company | 26,095 | 0 |
| 9740 | Pacific Bell Telephone Company | 18,541 | 0 |
| 9417 | Bellsouth Telecommunications Inc dba Southern Bell Telephone & Telegraph | 15,734 | 0 |
| 9419 | Bellsouth Telecommunications Inc dba South Central Bell Telephone | 13,075 | 0 |
| 9329 | Ameritech Illinois | 6,645 | 0 |
| 516C | AT&T Enterprises LLC | 5,935 | 113 |
| 9323 | Ameritech Michigan | 5,035 | 0 |
| 9321 | Ameritech Ohio | 4,377 | 0 |