173.39.152.0/21
🇯🇵CIDR
173.39.152.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Shibuya City
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 173.39.152.0/21 | AS109CISCOSYSTEMS - CISCO SYSTEMS, INC. | Valid | ARIN | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 173.36.0.0/14 | AS109CISCOSYSTEMS - CISCO SYSTEMS, INC. | Valid | — | 6/1/2026 |
| 173.39.128.0/19 | AS109CISCOSYSTEMS - CISCO SYSTEMS, INC. | Valid | — | 6/1/2026 |
Origin ASN
AS109
CISCOSYSTEMS - CISCO SYSTEMS, INC.
Geolocation
API
Open https://api.ipctl.io/v1/prefix/173.39.152.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/173.39.152.0/21" | jq
External Links