Prefix 904-503 — Jacksonville, FL
- Area code
- 904
- Prefix (NXX)
- 503
- Rate center
- Jacksonville
- State
- Florida
- Time zone
- Eastern
- Code holder
- COMCAST IP PHONE, LLC
- OCN
- 318J
- Pooled
- Yes (thousands-block pooling)
- Assigned
- 2012-04-02
- LATA
- 452
A phone number starting 904-503 was issued in the Jacksonville rate center of FL — part of area code 904.
NANPA's central-office code records list COMCAST IP PHONE, LLC (OCN 318J) as the code holder, assigned April 2, 2012. Because 904-503 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
A scammer can display 904-503 without ever touching FL. When in doubt, end the call and reach the company or agency through its official website; unwanted robocalls belong in the FTC's fraud report queue.
Jacksonville is part of the Jacksonville, FL Metropolitan Statistical Area. For routing purposes it sits in LATA 452. Numbers here keep Eastern time.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 904-500 | Jacksonville | PAETEC ITEL, LLC |
| 904-501 | Saint Johns | NEW CINGULAR WIRELESS PCS, LLC - GA |
| 904-502 | Jacksonville | NEW CINGULAR WIRELESS PCS, LLC - GA |
| 904-504 | Jacksonville | NEW CINGULAR WIRELESS PCS, LLC - GA |
| 904-505 | Middleburg | METROPCS, INC. |
| 904-506 | Saint Johns | BANDWIDTH.COM CLEC, LLC - FL |
FAQ
Where is 904-503 located?
The prefix is assigned to the Jacksonville rate center in FL, area code 904. It is part of the Jacksonville, FL Metropolitan Statistical Area.
Which company owns 904-503 numbers?
COMCAST IP PHONE, LLC holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 904-503 safe to answer?
The prefix itself says nothing about the caller. Legitimate Jacksonville businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.