128.172.0.0/16
🇺🇸IPv4ARINallocatedNo ROA
CIDR
128.172.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇺🇸 United States
City
Richmond (The Fan District)
RIR
ARIN
Status
allocated
Allocated
10/21/1986
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 128.172.0.0/18 | AS16643VCU-ASN1 - Virginia Commonwealth University | No ROA | — | 6/13/2026 |
| 128.172.64.0/18 | AS16643VCU-ASN1 - Virginia Commonwealth University | No ROA | — | 6/13/2026 |
| 128.172.128.0/18 | AS16643VCU-ASN1 - Virginia Commonwealth University | No ROA | — | 6/13/2026 |
| 128.172.192.0/18 | AS16643VCU-ASN1 - Virginia Commonwealth University | No ROA | — | 6/13/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS198949 | RADB | MAINT-AS198949 | 11/13/2023 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/128.172.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/128.172.0.0/16" | jq
External Links