OCN 7240 · Competitive Local Exchange Carrier
MCImetro Access Transmission Services LLC - CA
d/b/a MCI Worldcom Communications Inc
Part of the Verizon group — 143 OCNs across 53 states · 236,111 blocks combined.
Holding: Verizon Communications Inc
Total blocks
1,775
Recent (18 mo)
0
Medium
0
Old
761
Area codes
28
States
1
Address
8521 Leesburg Pike,
Vienna, VA 22182-2427
8521 Leesburg Pike,
Vienna, VA 22182-2427
Website
verizon.com
verizon.com
First assigned block
2001-01-25
2001-01-25
Last assigned block
2022-05-25
2022-05-25
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HQ — Vienna, VA
Block portfolio at a glance
By age
- Recent (0) — last 18 mo
- Medium (0)
- Old (761)
- Undated (1,014)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- California CA · 1,775
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Best vanity numbers from MCImetro Access Transmission Services LLC - CA'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 |
|---|---|---|---|---|---|
| (564) 266-7269 ★ | COMPANY | Business | WA | 2025-12-05 | 302,351 |
| (656) 266-7269 ★ | COMPANY | Business | FL | 2025-06-24 | 302,351 |
| (839) 266-7269 ★ | COMPANY | Business | SC | 2025-10-23 | 302,351 |
| (564) 266-7883 ★ | COMPUTER | Computer / Hardware | WA | 2025-12-05 | 272,250 |
| (656) 266-7883 ★ | COMPUTER | Computer / Hardware | FL | 2025-06-24 | 272,250 |
| (839) 266-7883 ★ | COMPUTER | Computer / Hardware | SC | 2025-10-23 | 272,250 |
| (657) 797-8367 ★ | SYSTEMS | Technical / Electronics / Software | CA | 2025-01-28 | 226,067 |
| (929) 797-8367 ★ | SYSTEMS | Technical / Electronics / Software | NY | 2024-12-13 | 226,067 |
| (916) 642-4235 ★ | MICHAEL | Male / Masculine Names | CA | 2025-04-07 | 180,365 |
| (629) 337-4467 ★ | DESIGNS | Printing / Markers / Pens | TN | 2025-11-18 | 141,194 |
| (848) 397-7377 ★ | EXPRESS | Mail / Postal Services | NJ | 2025-09-03 | 134,035 |
| (324) 222-3369 ★ | ACADEMY | Education / College | FL | 2026-01-15 | 127,272 |
Want one of these or something similar? Request the number from this carrier and we'll route the request.
Area codes
| NPA | Blocks | Recent | Last |
|---|---|---|---|
| 858 | 226 | — | 2022-05-25 |
| 760 | 175 | — | 2015-06-12 |
| 619 | 169 | — | 2020-11-15 |
| 310 | 117 | — | 2005-11-15 |
| 650 | 109 | — | 2017-09-12 |
| 818 | 103 | — | 2019-07-02 |
| 714 | 98 | — | 2015-01-30 |
| 925 | 76 | — | 2018-06-12 |
| 323 | 68 | — | 2017-07-26 |
| 949 | 65 | — | 2019-05-28 |
| 408 | 62 | — | 2012-05-24 |
| 415 | 58 | — | 2013-11-22 |
| 213 | 54 | — | 2018-12-12 |
| 424 | 49 | — | 2021-09-29 |
| 510 | 49 | — | 2018-04-05 |
| 951 | 49 | — | 2019-11-11 |
| 562 | 42 | — | 2018-08-23 |
| 626 | 39 | — | 2016-03-01 |
| 707 | 36 | — | 2017-06-14 |
| 831 | 26 | — | 2018-06-05 |
| 909 | 26 | — | 2019-09-27 |
| 669 | 25 | — | 2017-06-12 |
| 657 | 12 | — | 2019-01-23 |
| 747 | 12 | — | 2019-05-28 |
| 628 | 10 | — | 2018-05-16 |
| 661 | 10 | — | 2005-09-26 |
| 442 | 8 | — | 2017-11-01 |
| 805 | 2 | — | 2007-02-14 |
States
| State | Blocks | Recent |
|---|---|---|
| CA | 1,775 | — |
Sister OCNs in the Verizon group
Same customer-facing carrier, different state-registered OCN. Combined stats are on the Verizon group page.
Sister OCNs under Verizon Communications Inc
| OCN | Company | Total | Recent |
|---|---|---|---|
| 7229 | MCImetro Access Transmission Services LLC | 19,828 | 88 |
| 9104 | Verizon New York Inc | 9,244 | 0 |
| 9208 | Verizon Pennsylvania Inc | 5,861 | 0 |
| 9102 | Verizon New England Inc | 5,475 | 0 |
| 9206 | Verizon New Jersey Inc | 5,300 | 0 |
| 9212 | Verizon Maryland Inc | 4,281 | 0 |
| 9213 | Verizon Virginia Inc | 4,025 | 0 |
| 7133 | MCImetro Access Transmission Services LLC - NY | 1,864 | 0 |
| 8909 | Codetel (DR) | 1,143 | 0 |
| 7279 | MCImetro Access Transmission Services LLC - MI | 1,048 | 0 |
| 7448 | MCI Worldcom Communications Inc - FL | 1,041 | 1 |
| 9211 | Verizon Washington DC Inc | 848 | 0 |