156.40.0.0/15
🇺🇸IPv4RIPEassignedNo ROA
CIDR
156.40.0.0/15
IP Version
IPv4
Addresses
131K
Mask
/15 (255.254.0.0)
Country
🇺🇸 United States
City
Bethesda
RIR
RIPE
Status
assigned
Allocated
-
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
8 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 156.41.0.0/16 | AS1226CTA-42-AS1226 - California Department of Technology | No ROA | — | 6/15/2026 |
| 156.40.0.0/16 | AS3527NIH-NET - National Institutes of Health | No ROA | — | 6/15/2026 |
| 156.40.98.0/23 | AS30387NIH-NET-NCCS - National Institutes of Health | Valid | — | 6/15/2026 |
| 156.40.93.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 6/15/2026 |
| 156.40.94.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 6/15/2026 |
| 156.40.95.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 6/15/2026 |
| 156.40.197.0/24 | AS19050TIC-DHHS-INTERIOR - U.S. Department of Health & Human Services | Valid | — | 6/15/2026 |
| 156.40.53.0/24 | AS30387NIH-NET-NCCS - National Institutes of Health | Valid | — | 6/15/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 156.41.0.0/16 | AS1226 | 🇺🇸US | allocated |
| 156.40.128.0/18 | AS3527 | 🇺🇸US | allocated |
| 156.40.0.0/18 | AS3527 | 🇺🇸US | allocated |
| 156.40.96.0/19 | AS3527 | 🇺🇸US | allocated |
| 156.40.224.0/19 | AS3527 | 🇺🇸US | allocated |
| 156.40.208.0/20 | AS3527 | 🇺🇸US | allocated |
| 156.40.64.0/20 | AS3527 | 🇺🇸US | allocated |
| 156.40.80.0/21 | AS3527 | 🇺🇸US | allocated |
| 156.40.200.0/21 | AS3527 | 🇺🇸US | allocated |
| 156.40.192.0/22 | AS3527 | 🇺🇸US | allocated |
| 156.40.88.0/22 | AS3527 | 🇺🇸US | allocated |
| 156.40.94.0/23 | 🇺🇸US | allocated | |
| 156.40.198.0/23 | AS3527 | 🇺🇸US | allocated |
| 156.40.197.0/24 | AS19050 | 🇺🇸US | allocated |
| 156.40.92.0/24 | AS3527 | 🇺🇸US | allocated |
| 156.40.196.0/24 | AS3527 | 🇺🇸US | allocated |
| 156.40.93.0/24 | AS19050 | 🇺🇸US | allocated |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/156.40.0.0/15Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/156.40.0.0/15" | jq
External Links