Carrier group · Incumbent Local Exchange Carrier · 89 member OCNs
Frontier
Holding: Frontier Communications Corporation
Total blocks
25,565
Recent (18 mo)
4
Medium
4
Old
1,235
Member OCNs
89
States
30
Area codes
139
First assigned block
2000-04-04
2000-04-04
Last assigned block
2025-12-17
2025-12-17
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Tell us which one — we'll route your request to Frontier (89 OCNs across 30 states) and follow up with you.
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Block portfolio at a glance
By age
- Recent (4) — last 18 mo
- Medium (4)
- Old (1,235)
- Undated (24,322)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- California CA · 3,520
- Illinois IL · 2,759
- Connecticut CT · 2,723
- Texas TX · 2,574 · 4
- Florida FL · 2,003
- New York NY · 1,701
- Ohio OH · 1,699
- Indiana IN · 1,663
- Michigan MI · 1,365
- West Virginia WV · 1,281
- Wisconsin WI · 883
- Minnesota MN · 838
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Best vanity numbers from Frontier'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 |
|---|---|---|---|---|---|
| (945) 368-4527 ★ | DOUGLAS | Male / Masculine Names | TX | 2025-02-04 | 34,135 |
| (945) 368-4468 ★ | DOUGHNUTS | Supermarkets / Deli / Groceries | TX | 2025-02-04 | 294 |
| (945) 368-4687 ★ | ENVIOUS | Home | TX | 2025-02-04 | 267 |
| (945) 368-4746 ★ | ENVISION | Vision / Optometry / Glasses | TX | 2025-02-04 | 217 |
| (945) 368-4735 ★ | ENTIRELY | General | TX | 2025-02-04 | 134 |
| (945) 368-4766 | ENVIRON | Technical / Electronics / Software | TX | 2025-02-04 | 51,492 |
| (945) 368-4853 | ENTITLE | Insurance | TX | 2025-02-04 | 2,086 |
Want one of these or something similar? Request the number from this carrier and we'll route the request.
Member OCNs
89 OCNs roll up under Frontier.
| OCN | Company name on file | HQ | Type | Total | Recent |
|---|---|---|---|---|---|
| 9147 | Southern New England Telephone Company dba Frontier Communications of Connecticut | Dallas, TX | Regional Bell Operating Company | 2,723 | — |
| 2319 | Frontier California Inc | Irving, TX | Regional Bell Operating Company | 2,618 | — |
| 4344 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Regional Bell Operating Company | 2,210 | 2 |
| 0328 | Frontier Florida LLC dba Frontier Communications of Florida | Irving, TX | Regional Bell Operating Company | 1,999 | — |
| 0615 | Frontier North Inc - OH | Rochester, NY | Incumbent Local Exchange Carrier | 1,692 | — |
| 1015 | Frontier North Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 1,614 | — |
| 0695 | Frontier North Inc - MI | Rochester, NY | Incumbent Local Exchange Carrier | 1,178 | — |
| 0772 | Frontier North Inc - IN | Rochester, NY | Incumbent Local Exchange Carrier | 1,138 | — |
| 9214 | Frontier West Virginia Inc | New York, NY | Regional Bell Operating Company | 1,044 | — |
| 0096 | Citizens Telecommunications Company of New York Inc dba Frontier Communicatons of New York | Rochester, NY | Incumbent Local Exchange Carrier | 878 | — |
| 0886 | Frontier North Inc - WI | Rochester, NY | Incumbent Local Exchange Carrier | 728 | — |
| 0121 | Frontier Telephone of Rochester Inc | Rochester, NY | Incumbent Local Exchange Carrier | 638 | — |
| 1123 | Citizens Telecommunications Company of Minnesota LLC dba Frontier Citizens Communications of MN | Rochester, NY | Incumbent Local Exchange Carrier | 570 | — |
| 4420 | Frontier California Inc | Irving, TX | Regional Bell Operating Company | 530 | — |
| 1183 | Citizens Telecommunications Company of Illinois dba Frontier Citizens Communications of Illinois | Rochester, NY | Incumbent Local Exchange Carrier | 517 | — |
| 0779 | Frontier North Inc - IN | Rochester, NY | Incumbent Local Exchange Carrier | 473 | — |
| 4335 | Frontier Communications of the Carolinas Inc - SC | Rochester, NY | Incumbent Local Exchange Carrier | 354 | — |
| 1036 | Frontier North Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 343 | — |
| 2154 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Regional Bell Operating Company | 341 | — |
| 7513 | CTSI Inc - PA | Dallas, PA | Competitive Local Exchange Carrier | 334 | — |
| 1367 | Frontier Communications of Minnesota Inc | Rochester, NY | Incumbent Local Exchange Carrier | 302 | — |
| 4334 | Frontier Communications of the Carolinas Inc - NC | Rochester, NY | Incumbent Local Exchange Carrier | 285 | — |
| 0270 | Citizens Telecommunications Company of West Virginia dba Frontier Communications of West Virginia | Rochester, NY | Incumbent Local Exchange Carrier | 237 | — |
| 2308 | Citizens Telecommunications Company of California Inc dba Frontier Communications of California | Rochester, NY | Incumbent Local Exchange Carrier | 234 | — |
| 1128 | Citizens Telecommuncations of Nebraska LLC dba Frontier Communications of Nebraska | Rochester, NY | Incumbent Local Exchange Carrier | 219 | — |
| 0509 | Frontier Communications of the Carolinas Inc - NC | Rochester, NY | Incumbent Local Exchange Carrier | 196 | — |
| 1127 | Frontier Communications of Iowa Inc | Rochester, NY | Incumbent Local Exchange Carrier | 165 | — |
| 0681 | Frontier Midstates Inc - MI | Rochester, NY | Incumbent Local Exchange Carrier | 159 | — |
| 1000 | Frontier Communications of the Carolinas Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 140 | — |
| 4449 | Navajo Communications Company Inc dba Frontier Navajo Communications | Rochester, NY | Incumbent Local Exchange Carrier | 100 | — |
| 0100 | Frontier Communications of New York Inc | Rochester, NY | Incumbent Local Exchange Carrier | 88 | — |
| 2172 | Citizens Utilities Rural Company Inc dba Frontier Citizens Utilities Rural | Rochester, NY | Incumbent Local Exchange Carrier | 86 | — |
| 4429 | Citizens Telecommunications Company of Utah dba Frontier Communications of Utah | Rochester, NY | Incumbent Local Exchange Carrier | 85 | — |
| 4426 | Citizens Telecommunications Company of the White Mountains Inc dba Frontier Communications of the White Mountains | Rochester, NY | Incumbent Local Exchange Carrier | 81 | — |
| 1055 | Frontier Communications - Midland Inc | Rochester, NY | Incumbent Local Exchange Carrier | 65 | — |
| 4421 | Frontier Communications of the Southwest Inc - NV | Rochester, NY | Incumbent Local Exchange Carrier | 63 | — |
| 0964 | Frontier Communications of Wisconsin LLC | Rochester, NY | Incumbent Local Exchange Carrier | 60 | — |
| 4450 | Navajo Communications Company Inc dba Frontier Navajo Communications | Rochester, NY | Incumbent Local Exchange Carrier | 60 | — |
| 4336 | Citizens Telecommunications Company of Tennesee LLC dba Frontier Communications of Tennesee LLC | Rochester, NY | Incumbent Local Exchange Carrier | 57 | — |
| 0870 | Frontier Communications of Wisconsin LLC | Rochester, NY | Incumbent Local Exchange Carrier | 56 | — |
| 0526 | Frontier Communications of the Carolinas Inc - SC | Rochester, NY | Incumbent Local Exchange Carrier | 45 | — |
| 2354 | Citizens Telecommunications Company of Nevada dba Frontier Communications of Nevada | Rochester, NY | Incumbent Local Exchange Carrier | 43 | — |
| 0577 | Citizens Telecommunications Company of Tennesee LLC dba Frontier Communications of Tennesee LLC | Rochester, NY | Incumbent Local Exchange Carrier | 40 | — |
| 3402 | Citizens Telecommunications Company of California Inc dba Frontier Communications of California | Rochester, NY | Incumbent Local Exchange Carrier | 40 | — |
| 0306 | Frontier Communications of the South LLC - AL | Rochester, NY | Incumbent Local Exchange Carrier | 39 | — |
| 2475 | Frontier Communications of America Inc - NY | Rochester, NY | Competitive Local Exchange Carrier | 35 | — |
| 0072 | Frontier Communications of Ausable Valley Inc | Rochester, NY | Incumbent Local Exchange Carrier | 34 | — |
| 0831 | Frontier Midstates Inc - IN | Rochester, NY | Incumbent Local Exchange Carrier | 34 | — |
| 0122 | Frontier Communications of Seneca Gorham Inc | Rochester, NY | Incumbent Local Exchange Carrier | 31 | — |
| 0387 | Frontier Communications of Georgia LLC | Rochester, NY | Incumbent Local Exchange Carrier | 31 | — |
| 0460 | Frontier Communications of Mississippi Inc | Houlka, MS | Incumbent Local Exchange Carrier | 30 | — |
| 863F | Frontier Communications of the Southwest Inc - CA | Rochester, NY | Incumbent Local Exchange Carrier | 30 | — |
| 1038 | Frontier Communications of Illinois Inc | Rochester, NY | Incumbent Local Exchange Carrier | 29 | — |
| 440G | Frontier Communications of America Inc - NC | Rochester, NY | Competitive Local Exchange Carrier | 28 | — |
| 0149 | Frontier Communications of Breezewood LLC | Rochester, NY | Incumbent Local Exchange Carrier | 27 | — |
| 1061 | Frontier Communications of Mt. Pulaski Inc | Rochester, NY | Incumbent Local Exchange Carrier | 27 | — |
| 0168 | Frontier Communications of Pennsylvania LLC | Rochester, NY | Incumbent Local Exchange Carrier | 26 | — |
| 4417 | Frontier Communications of Michigan Inc | Rochester, NY | Incumbent Local Exchange Carrier | 26 | — |
| 4464 | Frontier Communications of the South LLC - AL | Rochester, NY | Incumbent Local Exchange Carrier | 26 | — |
| 2315 | Global Valley Networks | Patterson, CA | Incumbent Local Exchange Carrier | 24 | — |
| 0701 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Competitive Local Exchange Carrier | 23 | 2 |
| 0362 | Frontier Communications of Georgia LLC | Rochester, NY | Incumbent Local Exchange Carrier | 22 | — |
| 4419 | Frontier Communications of the Southwest Inc - AZ | Rochester, NY | Incumbent Local Exchange Carrier | 22 | — |
| 7534 | Frontier California Inc | Irving, TX | Competitive Local Exchange Carrier | 19 | — |
| 1073 | Frontier Communications - Prairie Inc | Rochester, NY | Incumbent Local Exchange Carrier | 17 | — |
| 0944 | Frontier Communications of Wisconsin LLC | Rochester, NY | Incumbent Local Exchange Carrier | 15 | — |
| 2344 | Frontier Communications West Coast Inc - CA | Rochester, NY | Incumbent Local Exchange Carrier | 15 | — |
| 0152 | Frontier Communications of Canton LLC | Rochester, NY | Incumbent Local Exchange Carrier | 14 | — |
| 0301 | Frontier Communications of the South LLC - AL | Monroeville, AL | Incumbent Local Exchange Carrier | 14 | — |
| 0194 | Frontier Communications of Oswayo River LLC | Rochester, NY | Incumbent Local Exchange Carrier | 11 | — |
| 0828 | Frontier Communications of Thorntown Inc | Rochester, NY | Incumbent Local Exchange Carrier | 11 | — |
| 0912 | Frontier Communications of Wisconsin LLC | Rochester, NY | Incumbent Local Exchange Carrier | 10 | — |
| 1079 | Frontier Communications-Schuyler Inc - IL | Rochester, NY | Incumbent Local Exchange Carrier | 9 | — |
| 4418 | Frontier Communications of Michigan Inc - OH | Rochester, NY | Incumbent Local Exchange Carrier | 9 | — |
| 0750 | Frontier Communications of Indiana Inc | Rochester, NY | Incumbent Local Exchange Carrier | 7 | — |
| 0998 | Frontier Communications of Depue Inc | Rochester, NY | Incumbent Local Exchange Carrier | 7 | — |
| 0128 | Frontier Communications of Sylvan Lake Inc | Rochester, NY | Incumbent Local Exchange Carrier | 5 | — |
| 4451 | Navajo Communications Company Inc dba Frontier Navajo Communications Company | Rochester, NY | Incumbent Local Exchange Carrier | 5 | — |
| 0110 | Ogden Telelephone Company dba Frontier Ogden Telephone Company | Rochester, NY | Incumbent Local Exchange Carrier | 4 | — |
| 4465 | Frontier Communications of the South LLC - FL | Rochester, NY | Incumbent Local Exchange Carrier | 4 | — |
| 2342 | Citizens Telecommunications Company of California Inc dba Frontier Communications of California | Rochester, NY | Incumbent Local Exchange Carrier | 3 | — |
| 2474 | Frontier Communications of America Inc - MN | Rochester, NY | Competitive Local Exchange Carrier | 3 | — |
| 006E | Frontier Communications of America Inc - CA | Stamford, CT | Competitive Local Exchange Carrier | 2 | — |
| 1011 | Frontier Communications of Lakeside Inc | Rochester, NY | Incumbent Local Exchange Carrier | 2 | — |
| 1067 | Frontier Communications of Orion Inc | Rochester, NY | Incumbent Local Exchange Carrier | 2 | — |
| 127G | Frontier Communications of Virginia Inc - VA | Rochester, NY | Incumbent Local Exchange Carrier | 2 | — |
| 0178 | Frontier Communications of Lakewood LLC | Rochester, NY | Incumbent Local Exchange Carrier | 1 | — |
| 0967 | Frontier Communications of Wisconsin LLC | Rochester, NY | Incumbent Local Exchange Carrier | 1 | — |
| 3400 | Frontier Communications Corporation | Rochester, NY | Incumbent Local Exchange Carrier | 1 | — |