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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About Frontier
Frontier Communications provides broadband internet, digital television, and in some areas home phone services to residential and business customers across 25 US states. It operates primarily as an ILEC with a large fiber-optic network, serving consumer and small business markets in incumbent territories. As of September 2024, Verizon announced its intent to acquire Frontier for $20 billion to expand its fiber footprint.
- Parent: Frontier Communications Parent, Inc.
- Founded: 1935
- Headquarters: Dallas, TX
- Services: fiber broadband, digital TV, home phone, ILEC services
Sources: Frontier Communications - Wikipedia · Frontier Internet: Our Best Fiber Internet, TV & Phone · About Frontier | Company Purpose, Community & More · Frontier Communications Parent, Inc. - Investor Relations
Toll-free side: Related toll-free RespOrg: Frontier (code FLFLX). View on resporgs.com →
Headquarters: Dallas, TX
From Southern New England Telephone Company dba Frontier Communications of Connecticut (OCN 9147), the largest member of the Frontier group.
Carrier website
frontier.com: opens in a new tab
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 |
|---|---|---|---|---|
| (945) 368-4527 ★ | DOUGLAS | Male / Masculine Names | TX | 2025-02-04 |
| (945) 368-4468 ★ | DOUGHNUTS | Supermarkets / Deli / Groceries | TX | 2025-02-04 |
| (945) 368-4687 ★ | ENVIOUS | Home | TX | 2025-02-04 |
| (945) 368-4746 ★ | ENVISION | Vision / Optometry / Glasses | TX | 2025-02-04 |
| (945) 368-4735 ★ | ENTIRELY | General | TX | 2025-02-04 |
| (945) 368-4766 | ENVIRON | Technical / Electronics / Software | TX | 2025-02-04 |
| (945) 368-4853 | ENTITLE | Insurance | TX | 2025-02-04 |
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 | · |