New Jersey, United States
Eastern Time
10:03 AM
Area Code
551
State / Province
New Jersey
Country
United States
Time Zone
Eastern Time
Area code 551 covers 22 cities and communities across New Jersey, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+15515550100">+15515550100</a><a href="tel:+15515550199">+15515550199</a>Look up which exchange in New Jersey a specific 551 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
299 active prefixes in this area code, assigned as 3,145 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 3,145
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 551-200 | 0 | Jersey City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-200 | 1 | Jersey City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-200 | 2 | Jersey City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-200 | 3 | Jersey City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-200 | 4 | Jersey City | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-200 | 5 | Jersey City | Landline or VoIP | YMAX COMMUNICATIONS CORP. - NJ (325E) | NEWARK | 224 | — | — |
| 551-200 | 6 | Jersey City | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NBWKNJNBX3Z | 224 | — | — |
| 551-200 | 7 | Jersey City | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-200 | 8 | Jersey City | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-200 | 9 | Jersey City | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NBWKNJNBX3Z | 224 | — | — |
| 551-200 | A | Jersey City | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-201 | 0 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-201 | 1 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-201 | 2 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-201 | 3 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-201 | 4 | Jersey City | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-201 | 5 | Jersey City | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-201 | 6 | Jersey City | Landline or VoIP | NUSO, LLC (732J) | NWRKNJMDX4X | 224 | — | — |
| 551-201 | 7 | Jersey City | Landline or VoIP | NUSO, LLC (732J) | NWRKNJMDX4X | 224 | — | — |
| 551-201 | 8 | Jersey City | Landline or VoIP | COMMIO, LLC (939H) | NWRKNJMDOMD | 224 | — | — |
| 551-201 | 9 | Jersey City | Landline or VoIP | COMMIO, LLC (939H) | NWRKNJMDOMD | 224 | — | — |
| 551-201 | A | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-202 | 0 | Cliffside | Landline or VoIP | IP HORIZON LLC (515J) | — | 224 | — | — |
| 551-202 | 1 | Cliffside | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-202 | 2 | Cliffside | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - NJ (118F) | NWRKNJ0248Z | 224 | — | — |
| 551-202 | 3 | Cliffside | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-202 | 4 | Cliffside | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-202 | 5 | Cliffside | Landline or VoIP | METROPCS, INC. (5562) | WAYNE | 224 | — | — |
| 551-202 | 6 | Cliffside | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-202 | 7 | Cliffside | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-202 | 8 | Cliffside | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-202 | 9 | Cliffside | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-202 | A | Cliffside | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-203 | 0 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-203 | 1 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-203 | 2 | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-203 | 3 | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-203 | 4 | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-203 | 5 | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-203 | 6 | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-203 | 7 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-203 | 8 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-203 | 9 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-203 | A | Jersey City | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | NEW BRUNSWICK | 224 | — | — |
| 551-204 | 0 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 1 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 2 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 3 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 4 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 5 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 6 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 7 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 8 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | 9 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-204 | A | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-205 | 0 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-205 | 1 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 2 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 3 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 4 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 5 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-205 | 6 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 7 | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-205 | 8 | Jersey City | Landline or VoIP | TELNYX LLC (073H) | NWRKNJ0293Z | 224 | — | — |
| 551-205 | 9 | Jersey City | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-205 | A | Jersey City | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (7142) | NEWARK | 224 | — | — |
| 551-206 | 0 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 1 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 2 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 3 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 4 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 5 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 6 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 7 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 8 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | 9 | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-206 | A | Fair Lawn | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 0 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 1 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 2 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 3 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 4 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 5 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 6 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 7 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 8 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | 9 | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-207 | A | Ramsey | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ (6391) | NBWKNJ17QMD | 224 | — | — |
| 551-208 | A | Jersey City | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | RCPKNJ02XJY | 224 | — | — |
| 551-209 | 0 | Wyckoff | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-209 | 1 | Wyckoff | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-209 | 2 | Wyckoff | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-209 | 3 | Wyckoff | Landline or VoIP | ONVOY, LLC - NJ (637C) | NEWARK | 224 | — | — |
| 551-209 | 4 | Wyckoff | Landline or VoIP | TELNYX LLC (073H) | NWRKNJ0293Z | 224 | — | — |
| 551-209 | 5 | Wyckoff | Landline or VoIP | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ (264F) | NEWARK | 224 | — | — |
| 551-209 | 6 | Wyckoff | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-209 | 7 | Wyckoff | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-209 | 8 | Wyckoff | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-209 | 9 | Wyckoff | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
| 551-209 | A | Wyckoff | Wireless | OMNIPOINT COMMUNICATIONS, INC. - NJ (6623) | WAYNE | 224 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
299
Assignment Blocks
3,145
Rate Centers
22
Carriers of Record
40
| Type | Blocks | Share |
|---|---|---|
| Landline or VoIP | 1,693 | 54% |
| Wireless | 1,452 | 46% |
| Carrier | Blocks |
|---|---|
| ONVOY, LLC - NJ | 870 |
| OMNIPOINT COMMUNICATIONS, INC. - NJ | 584 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 436 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 315 |
| BANDWIDTH.COM CLEC, LLC - NJ | 211 |
| ONVOY SPECTRUM, LLC | 89 |
| PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 79 |
| METROPCS, INC. | 55 |
| VONAGE AMERICA LLC | 44 |
| IP HORIZON LLC | 41 |
| 30 other carriers | 421 |
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 |
|---|---|---|
| Jersey City | 53 | 567 |
| Hackensack | 46 | 490 |
| Bayonne | 32 | 335 |
| Union City | 24 | 256 |
| Ramsey | 20 | 204 |
| Fair Lawn | 17 | 187 |
| Cliffside | 14 | 143 |
| Kearny | 11 | 118 |
| Ridgewood | 10 | 110 |
| Closter | 8 | 88 |
| Rutherford | 8 | 88 |
| Englewood | 6 | 58 |
| Leonia | 6 | 64 |
| Westwood | 6 | 61 |
| Wyckoff | 6 | 58 |
| Dumont | 5 | 53 |
| Oakland | 5 | 47 |
| Park Ridge | 5 | 55 |
| Teaneck | 5 | 47 |
| Cragmere | 4 | 39 |
| Hasbrouck Heights | 4 | 35 |
| Oradell | 4 | 42 |
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 551 is a North American Numbering Plan (NANP) telephone area code assigned to New Jersey, United States. It is one of 10 area codes serving New Jersey. 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. 551 is an active North American Numbering Plan (NANP) area code, currently assigned to New Jersey, United States. It is safe to answer or dial calls using this area code.
Area code 551 covers 22 cities and communities in New Jersey, including Bayonne, Cliffside, Closter, Cragmere, Dumont, and 17 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 551 area code observe Eastern Time (IANA timezone: America/New_York). Eastern Time is UTC−5 in winter (EST) and UTC−4 in summer (EDT). When placing a call to a 551 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within New Jersey, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 551 + 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 1 551 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 551 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +15515550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.