Autonomous System
AS55722 CenPac Net Inc.
ISPActiveNauruAPNIC
AS55722 (CENPAC-AS-AP) is an ISP network operated by CenPac Net Inc. in Nauru, registered with APNIC. It has 4 IPv4 prefixes with 16,896 addresses and 1 IPv6 prefix, which makes it the 7,599th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses16,896in 4 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#7,599of 82,200 active ASNs
Details
OrganizationCenPac Net Inc.
AS nameCENPAC-AS-AP
Websitecenpac.net.nr
Country Nauru (NR)
Network typeISP
RegistryAPNIC
Abuse contactabuse@cenpac.nr
Registered—
Last updated2026-06-29
IPv4 prefixes
4 prefixes · 16,896 addresses| Network | Addresses | First – last address |
|---|---|---|
| 203.98.224.0/19 | 8,192 | 203.98.224.0 – 203.98.255.255 |
| 203.98.224.0/20 | 4,096 | 203.98.224.0 – 203.98.239.255 |
| 203.98.240.0/20 | 4,096 | 203.98.240.0 – 203.98.255.255 |
| 203.98.224.0/23 | 512 | 203.98.224.0 – 203.98.225.255 |
203.98.224.0/19 203.98.224.0/20 203.98.240.0/20 203.98.224.0/23
IPv6 prefixes
1 prefix- 2403:f600::/32
2403:f600::/32
Query AS55722 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS55722&key=YOUR_API_KEY"Any address in its prefixes resolves to AS55722, with or without a key:
curl "https://api.ipapi.is/?q=203.98.224.1"