Arizona, United States
Mountain Time
10:33 PM
Area Code
520
State / Province
Arizona
Country
United States
Time Zone
Mountain Time
Area code 520 covers 37 cities and communities across Arizona, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+15205550100">+15205550100</a><a href="tel:+15205550199">+15205550199</a>Look up which exchange in Arizona a specific 520 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
695 active prefixes in this area code, assigned as 5,348 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 5,348
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 520-200 | 0 | Hayden | Landline or VoIP | PEERLESS NETWORK OF ARIZONA, LLC - AZ (579F) | TUCSON | 668 | — | — |
| 520-200 | 1 | Hayden | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-200 | 2 | Hayden | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-200 | 3 | Hayden | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-200 | 4 | Hayden | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | TCSNAZMAVMD | 668 | — | — |
| 520-200 | 5 | Hayden | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-200 | 6 | Hayden | Landline or VoIP | CENTURYLINK COMMUNICATIONS, LLC (508J) | TCSNAZMAXYX | 668 | — | — |
| 520-200 | 7 | Hayden | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-200 | 8 | Hayden | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-200 | 9 | Hayden | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7175) | TCSNAZ64NMD | 668 | — | — |
| 520-200 | A | Hayden | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7175) | TCSNAZ64NMD | 668 | — | — |
| 520-201 | 0 | San Manuel | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-201 | 1 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 2 | San Manuel | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-201 | 3 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 4 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 5 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 6 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 7 | San Manuel | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-201 | 8 | San Manuel | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - AZ (587F) | TCSNAZMAXIX | 668 | — | — |
| 520-201 | 9 | San Manuel | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7175) | TCSNAZ64NMD | 668 | — | — |
| 520-201 | A | San Manuel | Landline or VoIP | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM (7175) | TCSNAZ64NMD | 668 | — | — |
| 520-202 | A | Tucson | Landline or VoIP | LEVEL 3 TELECOM OF ARIZONA, LLC - AZ (7552) | TCSMAZSJAMD | 668 | — | — |
| 520-203 | 0 | Tucson | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ (7465) | TUCSON | 668 | — | — |
| 520-203 | 1 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-203 | 2 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-203 | 3 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-203 | 4 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-203 | 5 | Tucson | Wireless | T-MOBILE USA, INC. (6529) | TCSMAZOI3MD | 668 | — | — |
| 520-203 | 6 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-203 | 7 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-203 | 8 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-203 | 9 | Tucson | Wireless | T-MOBILE USA, INC. (6529) | TCSMAZOI3MD | 668 | — | — |
| 520-203 | A | Tucson | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ (7465) | TUCSON | 668 | — | — |
| 520-204 | 0 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 1 | Tucson | Landline or VoIP | PAETEC ITEL, LLC (829J) | TCSNAZEAEMD | 668 | — | — |
| 520-204 | 2 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 3 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 4 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 5 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 6 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 7 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-204 | 8 | Tucson | Wireless | T-MOBILE USA, INC. (6529) | TCSMAZOI3MD | 668 | — | — |
| 520-204 | 9 | Tucson | Wireless | T-MOBILE USA, INC. (6529) | TCSMAZOI3MD | 668 | — | — |
| 520-204 | A | Tucson | Landline or VoIP | PAETEC ITEL, LLC (829J) | TCSNAZEAEMD | 668 | — | — |
| 520-205 | 0 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-205 | 1 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-205 | 2 | Tucson | Wireless | NEW CINGULAR WIRELESS PCS, LLC (6010) | TCSMAZCH1MD | 668 | — | — |
| 520-205 | 3 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 4 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 5 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 6 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 7 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 8 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | 9 | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-205 | A | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-206 | A | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-207 | 0 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 1 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 2 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 3 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 4 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 5 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 6 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 7 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 8 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | 9 | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-207 | A | Tucson | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | TCSNAZMAXCY | 668 | — | — |
| 520-208 | 0 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 1 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 2 | Casa Grande | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | PHOENIX | 666 | — | — |
| 520-208 | 3 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 4 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 5 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 6 | Casa Grande | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | PHOENIX | 666 | — | — |
| 520-208 | 7 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-208 | 8 | Casa Grande | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | PHOENIX | 666 | — | — |
| 520-208 | 9 | Casa Grande | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | PHOENIX | 666 | — | — |
| 520-208 | A | Casa Grande | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - AZ (3285) | PHOENIX | 666 | — | — |
| 520-209 | A | Tucson | Landline | QWEST CORPORATION (9636) | TUCSON MAIN | 668 | — | — |
| 520-210 | 0 | Tombstone | Landline or VoIP | PEERLESS NETWORK OF ARIZONA, LLC - AZ (579F) | TUCSON | 668 | — | — |
| 520-210 | 1 | Tombstone | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (6572) | TCSNAZXGAMD | 668 | — | — |
| 520-210 | 2 | Tombstone | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (6572) | TCSNAZXGAMD | 668 | — | — |
| 520-210 | 3 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | 4 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | 5 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | 6 | Tombstone | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 668 | — | — |
| 520-210 | 7 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | 8 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | 9 | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-210 | A | Tombstone | Landline or VoIP | ONVOY, LLC - AZ (630E) | TCSNAZMAXHX | 668 | — | — |
| 520-212 | A | Cascabel | Landline | MIDVALE TELEPHONE EXCHANGE, INC. (2226) | CASCABEL | 668 | — | — |
| 520-213 | 0 | Casa Grande | Landline or VoIP | METROPCS, INC. (5562) | TEMPAZNR5MD | 666 | — | — |
| 520-213 | 1 | Casa Grande | Landline or VoIP | METROPCS, INC. (5562) | TEMPAZNR5MD | 666 | — | — |
| 520-213 | 2 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-213 | 3 | Casa Grande | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (6572) | PHNZAZZJAMD | 666 | — | — |
| 520-213 | 4 | Casa Grande | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (6572) | PHNZAZZJAMD | 666 | — | — |
| 520-213 | 5 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-213 | 6 | Casa Grande | Wireless | T-MOBILE USA, INC. (6529) | TEMPAZNR5MD | 666 | — | — |
| 520-213 | 7 | Casa Grande | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (6572) | PHNZAZZJAMD | 666 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
695
Assignment Blocks
5,348
Rate Centers
37
Carriers of Record
53
| Type | Blocks | Share |
|---|---|---|
| Landline | 700 | 13% |
| Landline or VoIP | 2,383 | 45% |
| Wireless | 2,265 | 42% |
| Carrier | Blocks |
|---|---|
| T-MOBILE USA, INC. | 833 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 830 |
| QWEST CORPORATION | 679 |
| ONVOY, LLC - AZ | 671 |
| NEW CINGULAR WIRELESS PCS, LLC | 501 |
| BANDWIDTH.COM CLEC, LLC - AZ | 289 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ | 260 |
| LEVEL 3 COMMUNICATIONS, LLC - AZ | 166 |
| METROPCS, INC. | 158 |
| COMCAST IP PHONE, LLC | 150 |
| 43 other carriers | 811 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Tucson | 400 | 2,860 |
| Sierra Vista | 70 | 607 |
| Casa Grande | 67 | 607 |
| Nogales | 31 | 288 |
| Willcox | 18 | 160 |
| Benson | 12 | 120 |
| Bisbee | 9 | 93 |
| Douglas | 9 | 89 |
| Hayden | 9 | 96 |
| San Manuel | 8 | 87 |
| Superior | 7 | 72 |
| Tombstone | 7 | 71 |
| Whitlow | 7 | 73 |
| Sacaton | 4 | 27 |
| Sasabe | 3 | 19 |
| Sells | 3 | 13 |
| Ajo | 2 | 8 |
| Blackwater | 2 | 3 |
| Casa Blanca | 2 | 5 |
| Cascabel | 2 | 4 |
| Komatke | 2 | 4 |
| Lone Butte | 2 | 5 |
| Maricopa Village | 2 | 4 |
| Portal | 2 | 2 |
| Santa Rosa | 2 | 4 |
| Silverbell | 2 | 5 |
| Bowie | 1 | 1 |
| Elfrida | 1 | 1 |
| Flagstaff | 1 | 3 |
| Pearce | 1 | 1 |
| Prescott | 1 | 5 |
| San Simon | 1 | 1 |
| Sedona | 1 | 3 |
| Stotonic | 1 | 1 |
| Sunizona | 1 | 1 |
| West San Simon | 1 | 1 |
| Yuma | 1 | 4 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 520 is a North American Numbering Plan (NANP) telephone area code assigned to Arizona, United States. It is one of 5 area codes serving Arizona. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 520 is an active North American Numbering Plan (NANP) area code, currently assigned to Arizona, United States. It is safe to answer or dial calls using this area code.
Area code 520 covers 37 cities and communities in Arizona, including Ajo, Benson, Bisbee, Blackwater, Bowie, and 32 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 520 area code observe Mountain Time (IANA timezone: America/Denver). Mountain Time is UTC−7 in winter (MST) and UTC−6 in summer (MDT). When placing a call to a 520 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Arizona, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 520 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 520 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 520 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +15205550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.