42.156.128.0/17
🇨🇳CIDR
42.156.128.0/17
IP Version
IPv4
Addresses
32.7K
Mask
/17 (255.255.128.0)
Country
🇨🇳 China
City
Hangzhou
RIR
APNIC
Status
allocated
Allocated
3/16/2011
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 42.156.128.0/17 | AS37963ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd. | Valid | APNIC | 6/1/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 42.156.128.0/18 | AS37963ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd. | Valid | — | 6/1/2026 |
| 42.156.192.0/18 | AS37963ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd. | Valid | — | 6/1/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 42.156.128.0/17 | AS37963 | /24 | apnic |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 42.156.128.0/18 | AS37963 | 🇨🇳CN | assigned |
| 42.156.192.0/18 | AS37963 | 🇨🇳CN | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/42.156.128.0/17Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/42.156.128.0/17" | jq
External Links