- City / exchange
- Melbourne
- Province / state
- Florida
- Country
- United States
- Carrier
- Onvoy, LLC - FL
- Line type
- Likely VoIP / virtual number
- OCN
- 937C
- Status
- In Service
- Assigned
- 03/12/2026
- Number pooling
- Yes (block shared between carriers)
321-538 phone numbers
Melbourne, Florida, United States · Onvoy, LLC - FL
Reported numbers in 321-538
No numbers in this block have been reported by visitors yet.
What does the 321-538 prefix tell you?
Every North American number is area code + prefix + line. The prefix 321-538 was assigned to Onvoy, LLC - FL on 03/12/2026 for the Melbourne exchange. A call from this block usually originates from a Onvoy, LLC - FL customer in or near Melbourne, but caller ID can be spoofed to show any number.
Other Melbourne prefixes in 321
321-215321-216321-220321-237321-265321-272321-288321-294321-306321-308321-309321-312321-326321-327321-334321-339321-341321-343321-344321-345321-361321-366321-367321-369321-372321-373321-374321-378321-381321-389321-405321-409321-419321-429321-434321-447321-462321-467321-471321-473321-477321-491321-497321-499321-508321-516321-524321-541321-545321-549321-557321-574321-586321-608321-655321-674321-676321-722321-723321-724