Regional Bell Operating Company (RBOC)
109 OCNs · 165,130 blocks · 3 recent.
| OCN | Company | HQ | Holding | Total | Recent |
|---|---|---|---|---|---|
| 4344 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Frontier Communications Corporation | 2,210 | 2 |
| 9636 | Qwest Corporation | Minneapolis, MN | Centurylink | 9,234 | 1 |
| 9533 | Southwestern Bell Telephone Company | Dallas, TX | AT&T Inc | 26,095 | · |
| 9740 | Pacific Bell Telephone Company | Dallas, TX | AT&T Inc | 18,541 | · |
| 9417 | Bellsouth Telecommunications Inc dba Southern Bell Telephone & Telegraph | Atlanta, GA | AT&T Inc | 15,734 | · |
| 9419 | Bellsouth Telecommunications Inc dba South Central Bell Telephone | Atlanta, GA | AT&T Inc | 13,075 | · |
| 9104 | Verizon New York Inc | Boston, MA | Verizon Communications Inc | 9,244 | · |
| 9329 | Ameritech Illinois | Hoffman Estates, IL | AT&T Inc | 6,645 | · |
| 9208 | Verizon Pennsylvania Inc | Falls Church, VA | Verizon Communications Inc | 5,861 | · |
| 9631 | Qwest Corporation | Minneapolis, MN | Centurylink | 5,638 | · |
| 9102 | Verizon New England Inc | Boston, MA | Verizon Communications Inc | 5,475 | · |
| 9206 | Verizon New Jersey Inc | Falls Church, VA | Verizon Communications Inc | 5,300 | · |
| 9323 | Ameritech Michigan | Hoffman Estates, IL | AT&T Inc | 5,035 | · |
| 9321 | Ameritech Ohio | Hoffman Estates, IL | AT&T Inc | 4,377 | · |
| 9212 | Verizon Maryland Inc | Falls Church, VA | Verizon Communications Inc | 4,281 | · |
| 9213 | Verizon Virginia Inc | Falls Church, VA | Verizon Communications Inc | 4,025 | · |
| 9638 | Qwest Corporation | Minneapolis, MN | Centurylink | 3,367 | · |
| 9325 | Ameritech Indiana | Hoffman Estates, IL | AT&T Inc | 2,941 | · |
| 9147 | Southern New England Telephone Company dba Frontier Communications of Connecticut | Dallas, TX | Frontier Communications Corporation | 2,723 | · |
| 2319 | Frontier California Inc | Irving, TX | Frontier Communications Corporation | 2,618 | · |
| 9327 | Ameritech Wisconsin | Hoffman Estates, IL | AT&T Inc | 2,021 | · |
| 0328 | Frontier Florida LLC dba Frontier Communications of Florida | Irving, TX | Frontier Communications Corporation | 1,999 | · |
| 5111 | Consolidated Communications of Northern New England LLC - ME | Portland, ME | FairPoint Communications Inc | 1,165 | · |
| 5113 | Consolidated Communications of Northern New England LLC - NH | Portland, ME | FairPoint Communications Inc | 1,062 | · |
| 9214 | Frontier West Virginia Inc | New York, NY | Frontier Communications Corporation | 1,044 | · |
| 9211 | Verizon Washington DC Inc | Falls Church, VA | Verizon Communications Inc | 848 | · |
| 0233 | Verizon South Inc - VA (Contel) | Irving, TX | Verizon Communications Inc | 804 | · |
| 9210 | Verizon Delaware Inc | Falls Church, VA | Verizon Communications Inc | 786 | · |
| 5115 | Consolidated Communications of Vermont Company LLC | Portland, ME | FairPoint Communications Inc | 737 | · |
| 0169 | Verizon North Inc - PA | Irving, TX | Verizon Communications Inc | 682 | · |
| 4420 | Frontier California Inc | Irving, TX | Frontier Communications Corporation | 530 | · |
| 9742 | Nevada Bell Telephone Company | Dallas, TX | AT&T Inc | 417 | · |
| 2154 | Frontier Southwest Incorporated dba Frontier Communications of Texas | Irving, TX | Frontier Communications Corporation | 341 | · |
| 0170 | Verizon North Inc - PA (Contel) | Irving, TX | Verizon Communications Inc | 99 | · |
| 0201 | Verizon North Inc - PA (Quaker State) | Irving, TX | Verizon Communications Inc | 99 | · |
| 4337 | Verizon South Inc - VA | Irving, TX | Verizon Communications Inc | 73 | · |
| 864F | Verizon South Inc - NC (Contel) | Irving, TX | Verizon Communications Inc | 3 | · |
| 9300 | Ameritech | Detroit, MI | AT&T Inc | 1 | · |
| 0281 | Verizon North Inc | Irving, TX | Verizon Communications Inc | 0 | · |
| 0407 | Verizon South Inc - KY | Irving, TX | Verizon Communications Inc | 0 | · |
| 0410 | Verizon South Inc - KY (Contel) | Irving, TX | Verizon Communications Inc | 0 | · |
| 0479 | Verizon South Inc | Irving, TX | Verizon Communications Inc | 0 | · |
| 1186 | Verizon North Inc | Irving, TX | Verizon Communications Inc | 0 | · |
| 1789 | Kansas State Telephone dba Verizon Midwest Inc | Monroe, LA | Verizon Communications Inc | 0 | · |
| 1846 | GTE-MW dba Verizon Midwest Inc - MO (Contel Systems) | Irving, TX | Verizon Communications Inc | 0 | · |
| 1883 | Kansas State Telephone dba Verizon Midwest Inc (East MO) | Irving, TX | Verizon Communications Inc | 0 | · |
| 1922 | GTE-MW dba Verizon Midwest Inc - MO (Contel) | Irving, TX | Verizon Communications Inc | 0 | · |
| 2302 | Verizon California Inc | Irving, TX | Frontier Communications Corporation | 0 | · |
| 2449 | Verizon Northwest Inc | Irving, TX | Frontier Communications Corporation | 0 | · |
| 423F | Northern New England Telephone Operations LLC dba FairPoint Comm | Portland, ME | Fairpoint Communications Inc | 0 | · |
| 4313 | GTE MW dba Verizon Midwest Inc - MO (GTE) | Irving, TX | Verizon Communications Inc | 0 | · |
| 4331 | Verizon South Inc - AL | Irving, TX | Verizon Communications Inc | 0 | · |
| 4424 | Verizon South Inc - AL | Irving, TX | Verizon Communications Inc | 0 | · |
| 4478 | Verizon South Inc - TN | Irving, TX | Frontier Commnunications Corporation | 0 | · |
| 5000 | Verizon Pennsylvania Inc - PA | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5010 | Verizon Delaware Inc - DE | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5020 | Verizon Washington DC Inc - DC | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5030 | Verizon Maryland Inc - MD | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5040 | Verizon Virginia Inc - VA | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5050 | Frontier West Virginia Inc - WV | New York, NY | Frontier Communications Corporation | 0 | · |
| 5070 | Illinois Bell Telephone Company - IL | Hoffman Estates, IL | AT&T Inc | 0 | · |
| 5080 | Indiana Bell Telephone Company Inc - IN | Hoffman Estates, IL | AT&T Inc | 0 | · |
| 5090 | Michigan Bell Telephone Company - MI | Hoffman Estates, IL | AT&T Inc | 0 | · |
| 5101 | Qwest Corporation - AZ | Denver, CO | Centurylink | 0 | · |
| 5102 | Qwest Corporation - CO | Denver, CO | Centurylink | 0 | · |
| 5103 | Qwest Corporation - ID | Denver, CO | Centurylink | 0 | · |
| 5104 | Qwest Corporation - MT | Denver, CO | Centurylink | 0 | · |
| 5105 | Qwest Corporation - NM | Denver, CO | Centurylink | 0 | · |
| 5107 | Qwest Corporation - UT | Denver, CO | Centurylink | 0 | · |
| 5108 | Qwest Corporation - WY | Denver, CO | Centurylink | 0 | · |
| 5110 | Bell Atlantic | Bedminster, NJ | 0 | · | |
| 5112 | Verizon New England Inc dba Verizon Massachusetts - MA | Boston, MA | Verizon Communications Inc | 0 | · |
| 5114 | Verizon New England Inc dba Verizon Rhode Island - RI | Boston, MA | Verizon Communications Inc | 0 | · |
| 5120 | Verizon New Jersey Inc - NJ | Falls Church, VA | Verizon Communications Inc | 0 | · |
| 5130 | Verizon New York Inc - NY | Boston, MA | Verizon Communications Inc | 0 | · |
| 5131 | Verizon New York Inc - CT | Boston, MA | Verizon Communications Inc | 0 | · |
| 5141 | Qwest Corporation - IA | Denver, CO | Centurylink | 0 | · |
| 5142 | Qwest Corporation - MN | Denver, CO | Centurylink | 0 | · |
| 5143 | Qwest Corporation - NE | Denver, CO | Centurylink | 0 | · |
| 5144 | Qwest Corporation - ND | Denver, CO | Centurylink | 0 | · |
| 5145 | Qwest Corporation - SD | Denver, CO | Centurylink | 0 | · |
| 5150 | Ohio Bell Telephone Company - OH | Hoffman Estates, IL | AT&T Inc | 0 | · |
| 5161 | Qwest Corporation - WA | Denver, CO | Centurylink | 0 | · |
| 5162 | Qwest Corporation - Idaho | Denver, CO | Centurylink | 0 | · |
| 5163 | Qwest Corporation - OR | Denver, CO | Centurylink | 0 | · |
| 5170 | Pacific Bell Telephone Company - CA | Dallas, TX | AT&T Inc | 0 | · |
| 5173 | Nevada Bell Telephone Company - NV | Dallas, TX | AT&T Inc | 0 | · |
| 5181 | Bellsouth Telecommunications Inc - AL | Atlanta, GA | AT&T Inc | 0 | · |
| 5182 | Bellsouth Telecommunications Inc - KY | Atlanta, GA | AT&T Inc | 0 | · |
| 5183 | Bellsouth Telecommunications Inc - LA | Atlanta, GA | AT&T Inc | 0 | · |
| 5184 | Bellsouth Telecommunications Inc - MS | Atlanta, GA | AT&T Inc | 0 | · |
| 5185 | Bellsouth Telecommunications Inc - TN | Atlanta, GA | AT&T Inc | 0 | · |
| 5191 | Bellsouth Telecommunications Inc - FL | Atlanta, GA | AT&T Inc | 0 | · |
| 5192 | Bellsouth Telecommunications Inc - GA | Atlanta, GA | AT&T Inc | 0 | · |
| 5193 | Bellsouth Telecommunications Inc - NC | Atlanta, GA | AT&T Inc | 0 | · |
| 5194 | Bellsouth Telecommunications Inc - SC | Atlanta, GA | AT&T Inc | 0 | · |
| 5200 | The Southern New England Telephone Company dba Frontier Communications of Connecticut | Rochester, NY | Frontier Communications Corporation | 0 | · |
| 5211 | Southwestern Bell Telephone Company - AR | Dallas, TX | AT&T Inc | 0 | · |
| 5213 | Southwestern Bell Telephone Company - MO | Dallas, TX | AT&T Inc | 0 | · |
| 5214 | Southwestern Bell Telephone Company - KS | Dallas, TX | AT&T Inc | 0 | · |
| 5215 | Southwestern Bell Telephone Company - OK | Dallas, TX | AT&T Inc | 0 | · |
| 5216 | Southwestern Bell Telephone Company - TX | Dallas, TX | AT&T Inc | 0 | · |
| 5220 | Wisconsin Bell Inc - WI | Hoffman Estates, IL | AT&T Inc | 0 | · |
| 9100 | Verizon Communications | Baltimore, MD | Verizon Communications Inc | 0 | · |
| 9200 | Verizon Communications | Baltimore, MD | Verizon Communications Inc | 0 | · |
| 9400 | Bellsouth Telecommunications Inc | Atlanta, GA | AT&T Inc | 0 | · |
| 9600 | US West Communications Inc | Littleton, CO | Centurylink | 0 | · |
| 9700 | Pacific Bell Region | Garden Grove, CA | AT&T Inc | 0 | · |
| G126 | VERIZON NORTH CENTRAL REGION | New York, NY | 0 | · |