204.89.58.0/23
🇺🇸CIDR
204.89.58.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇺🇸 United States
City
New York
RIR
ARIN
Status
allocated
Allocated
12/7/2011
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.89.58.0/23 | AS6095NIBR-US-DMZ - Novartis Institutes for BioMedical Research, Inc. | No ROA | ARIN | 5/31/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 204.89.58.0/24 | AS6095NIBR-US-DMZ - Novartis Institutes for BioMedical Research, Inc. | Valid | — | 5/31/2026 |
| 204.89.59.0/24 | AS6095NIBR-US-DMZ - Novartis Institutes for BioMedical Research, Inc. | Valid | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS6095 | ARIN | MNT-NIBR-2 | 10/7/2020 |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/204.89.58.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/204.89.58.0/23" | jq
External Links