204.75.18.0/23
🇺🇸CIDR
204.75.18.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇺🇸 United States
City
Philadelphia
RIR
APNIC
Status
assigned
Allocated
6/23/1994
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.75.18.0/23 | AS151847FASTMAILPTYLTD-AS-AP - Fastmail Pty Ltd | Valid | APNIC | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.75.18.0/24 | AS151847FASTMAILPTYLTD-AS-AP - Fastmail Pty Ltd | Valid | — | 5/31/2026 |
| 204.75.19.0/24 | AS151847FASTMAILPTYLTD-AS-AP - Fastmail Pty Ltd | Valid | — | 5/31/2026 |
Geolocation
Country🇺🇸United StatesUS
CityPhiladelphia
API
Open https://api.ipctl.io/v1/prefix/204.75.18.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.75.18.0/23" | jq
External Links