Area code 520
5,223 number blocks indexed across 58 carriers.
States: AZ (5,223)
Carriers
| OCN | Company | HQ | Type | Blocks | Recent | Website |
|---|---|---|---|---|---|---|
| 6010 | New Cingular Wireless PCS LLC | Kirkland, WA | Wireless Carrier | 495 | 64 | att.com |
| 6572 | Cellco Partnership dba Verizon Wireless - AZ | Olathe, KS | Wireless Carrier | 832 | 52 | verizonwireless.com |
| 6529 | T-Mobile USA Inc | Bellevue, WA | Personal Communications Service (Wireless) | 837 | 32 | t-mobile.com |
| 321J | HD Carrier LLC | Henderson, NV | IP-Enabled Service / VoIP | 24 | 11 | hdcarrier.com |
| 624H | Onvoy Spectrum LLC | Broomfield, CO | Wireless Carrier | 88 | 7 | |
| 7217 | Teleport Communications America LLC - AZ | Staten Island, NY | Competitive Local Exchange Carrier | 149 | 2 | att.com |
| 490J | Boost SubscriberCo LLC | Washington, DC | Wireless Carrier | 12 | 2 | dish.com |
| 145J | Terra Nova Telecom Inc | Lakewood Ranch, FL | IP-Enabled Service / VoIP | 2 | 2 | terranova.net |
| 410H | Wide Voice LLC - AZ | Las Vegas, NV | Competitive Local Exchange Carrier | 2 | 2 | widevoice.com |
| 616J | Leap Telecom LLC | Denver, CO | IP-Enabled Service / VoIP | 2 | 2 | leap.tel |
| 907K | Allo Communications LLC | Lincoln, NE | IP-Enabled Service / VoIP | 2 | 2 | |
| 587F | Bandwidth.com CLEC LLC - AZ | Cary, NC | Competitive Local Exchange Carrier | 289 | 1 | bandwidth.com |
| 073H | Telnyx LLC | Chicago, IL | IP-Enabled Service / VoIP | 46 | 1 | telnyx.com |
| 829J | PAETEC iTel LLC | Charlotte, NC | IP-Enabled Service / VoIP | 15 | 1 | |
| 700J | Wavenation LLC | Chicago, IL | IP-Enabled Service / VoIP | 2 | 1 | peerlessnetwork.com |
| 883K | Ahoi LLC | Littleton, CO | IP-Enabled Service / VoIP | 1 | 1 | |
| 9636 | Qwest Corporation | Minneapolis, MN | Regional Bell Operating Company | 730 | — | centurylink.com |
| 630E | Onvoy LLC - AZ | Chicago, IL | Competitive Local Exchange Carrier | 671 | — | sinch.com |
| 3285 | Level 3 Communications LLC - AZ | Westminster, CO | Competitive Local Exchange Carrier | 166 | — | centurylink.com |
| 5562 | T-Mobile USA Inc | Dallas, TX | Personal Communications Service (Wireless) | 158 | — | metropcs.com |
| 318J | Comcast IP Phone LLC | Philadelphia, PA | IP-Enabled Service / VoIP | 150 | — | comcast.com |
| 579F | Peerless Network of Arizona LLC - AZ | Chicago, IL | Competitive Local Exchange Carrier | 121 | — | peerlessnetwork.com |
| 7465 | MCImetro Access Transmission Services LLC - AZ | Vienna, VA | Competitive Local Exchange Carrier | 110 | — | verizon.com |
| 7552 | Level 3 Telecom of Arizona LLC - AZ | Littleton, CO | Competitive Local Exchange Carrier | 64 | — | centurylink.com |
| 939H | Commio LLC | Austin, TX | IP-Enabled Service / VoIP | 40 | — | commio.com |
| 7175 | Electric Lightwave LLC dba Allstream | Portland, OR | Competitive Local Exchange Carrier | 36 | — | allstream.com |
| 965H | Fractel LLC | Indialantic, FL | IP-Enabled Service / VoIP | 20 | — | fractel.net |
| 516J | Ton80 Communications LLC | Anderson, SC | IP-Enabled Service / VoIP | 19 | — | coretel.net |
| 508J | CenturyLink Communications LLC | Littleton, CO | IP-Enabled Service / VoIP | 17 | — | centurylink.com |
| 7229 | MCImetro Access Transmission Services LLC | Vienna, VA | Competitive Local Exchange Carrier | 16 | — | verizon.com |
| MULT | Multiple OCN Listing | Administrative / Reserved | 14 | — | ||
| 5727 | Firstdigital Telecom LLC - UT | Salt Lake City, UT | Competitive Local Exchange Carrier | 11 | — | firstdigital.com |
| 890G | Intrado Communications LLC | Lancaster, TX | Competitive Local Exchange Carrier | 9 | — | att.com |
| 2179 | Gila River Telecommunications Inc | Chandler, AZ | Incumbent Local Exchange Carrier | 7 | — | gilarivertel.com |
| 515J | IP Horizon LLC | Orlando, FL | IP-Enabled Service / VoIP | 7 | — | |
| 2176 | Valley Telephone Cooperative Inc | Willcox, AZ | Incumbent Local Exchange Carrier | 6 | — | vtc.net |
| 593K | MCC Telephony LLC | Mediacom Park, NY | IP-Enabled Service / VoIP | 5 | — | |
| 732J | NUSO LLC | University City, MO | IP-Enabled Service / VoIP | 5 | — | brightlink.com |
| 183D | Valley Connections LLC - AZ | Willcox, AZ | Competitive Local Exchange Carrier | 4 | — | vtc.net |
| 947E | Gila Local Exchange Carrier Inc - AZ | Chandler, AZ | Competitive Local Exchange Carrier | 4 | — | gilarivertel.com |
| 2173 | Tohono O'Odham Utility Authority | Sells, AZ | Incumbent Local Exchange Carrier | 3 | — | toua.net |
| 551G | NUSO LLC | Atlanta, GA | Wireless Carrier | 3 | — | 365wireless.net |
| 114J | Exiant Communications LLC | Eldersburg, MD | IP-Enabled Service / VoIP | 2 | — | exiantcom.com |
| 197D | Vonage America LLC | Holmdel, NJ | IP-Enabled Service / VoIP | 2 | — | vonage.com |
| 2171 | Arizona Telephone Company | Madison, WI | Incumbent Local Exchange Carrier | 2 | — | tdstelecom.com |
| 2226 | Midvale Telephone Exchange Inc | Midvale, ID | Incumbent Local Exchange Carrier | 2 | — | mtecom.net |
| 425J | CSC Wireless LLC | Long Island City, NY | Wireless Carrier | 2 | — | alticeusa.com |
| 475J | Callworks Corporation | Fair Oaks, TX | IP-Enabled Service / VoIP | 2 | — | callworks.me |
| 478J | NUSO LLC | Atlanta, GA | IP-Enabled Service / VoIP | 2 | — | brightlink.com |
| 4793 | XO Arizona Inc | Reston, VA | Competitive Local Exchange Carrier | 2 | — | verizon.com |
| 506J | Twilio International Inc | San Francisco, CA | IP-Enabled Service / VoIP | 2 | — | twilio.com |
| 5736 | Commnet Wireless LLC | Castle Rock, CO | Wireless Carrier | 2 | — | commnetwireless.com |
| 710A | Allo Communications LLC - NE | Imperial, NE | Competitive Local Exchange Carrier | 2 | — | allophone.net |
| 7421 | AT&T Local | Bedminster, NJ | Competitive Local Exchange Carrier | 2 | — | att.com |
| 8293 | North County Communications Corporation | San Diego, CA | Competitive Local Exchange Carrier | 2 | — | nccom.com |
| 3334 | Table Top Telephone Company | Ajo, AZ | Incumbent Local Exchange Carrier | 1 | — | ponderosatel.com |
| 597F | VOIP Innovations LLC | Pittsburgh, PA | IP-Enabled Service / VoIP | 1 | — | voipstreet.com |
| 6630 | Spok Inc | Plano, TX | Wireless Carrier | 1 | — | spok.com |