Area code 534
623 number blocks indexed across 32 carriers.
States: WI (623)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6534 | New Cingular Wireless PCS LLC - IL | Atlanta, GA | Wireless Carrier | 183 | 73 | att.com |
| 225C | Onvoy LLC - WI | Chicago, IL | Competitive Local Exchange Carrier | 164 | 15 | sinch.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 20 | 6 | t-mobile.com |
| 6508 | Cellco Partnership dba Verizon Wireless - WI | Olathe, KS | Wireless Carrier | 10 | 6 | verizonwireless.com |
| 792K | Charter IP Enabled Services LLC | Saint Louis, MO | IP-Enabled Service / VoIP | 13 | 4 | |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 5 | 3 | metropcs.com |
| 6701 | Aerial Communications Inc | Chicago, IL | Personal Communications Service (Wireless) | 5 | 2 | t-mobile.com |
| 6274 | United States Cellular - WI | Chicago, IL | Wireless Carrier | 3 | 2 | uscellular.com |
| 458L | ImOn Communicatoins LLC | Cedar Rapids, IA | Competitive Local Exchange Carrier | 2 | 2 | |
| 478J | NUSO LLC | Atlanta, GA | IP-Enabled Service / VoIP | 2 | 2 | brightlink.com |
| 616J | Leap Telecom LLC | Denver, CO | IP-Enabled Service / VoIP | 2 | 2 | leap.tel |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 3 | 1 | comcast.com |
| 145J | Terra Nova Telecom Inc | Lakewood Ranch, FL | IP-Enabled Service / VoIP | 2 | 1 | terranova.net |
| 793K | TWC IP Enabled Services LLC | Saint Louis, MO | IP-Enabled Service / VoIP | 1 | 1 | |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 39 | — | fractel.net |
| 5489 | Level 3 Communications LLC - WI | Broomfield, CO | Competitive Local Exchange Carrier | 38 | — | centurylink.com |
| 516J | Ton80 Communications LLC | Anderson, SC | IP-Enabled Service / VoIP | 30 | — | coretel.net |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 29 | — | |
| 007F | Bandwidth.com CLEC LLC - WI | Cary, NC | Competitive Local Exchange Carrier | 17 | — | bandwidth.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 490J | Boost SubscriberCo LLC | Washington, DC | Wireless Carrier | 10 | — | dish.com |
| 227F | Peerless Network of Wisconsin LLC - WI | Chicago, IL | Competitive Local Exchange Carrier | 6 | — | peerlessnetwork.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 6 | — | commio.com |
| 7216 | Teleport Communications America - WI - LLC | Staten Island, NY | Competitive Local Exchange Carrier | 4 | — | att.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 3 | — | hdcarrier.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 2 | — | vonage.com |
| 425J | CSC Wireless LLC | Long Island City, NY | Wireless Carrier | 2 | — | alticeusa.com |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 2 | — | centurylink.com |
| 516C | AT&T Enterprises LLC | San Antonio, TX | IP-Enabled Service / VoIP | 2 | — | att.com |
| 732J | NUSO LLC | University City, MO | IP-Enabled Service / VoIP | 2 | — | brightlink.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 1 | — | verizon.com |
| 766H | Integrated Path Communications LLC - WI | Hillsdale, NY | Competitive Local Exchange Carrier | 1 | — | ipc-llc.com |