HomePrefix Lookup121.4.8.0/21

121.4.8.0/21

🇨🇳
CIDR
121.4.8.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Shanghai
RIR
APNIC
Status
announced
Allocated
-

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
121.4.8.0/21AS45090TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited Valid—6/13/2026

Covering Prefix

1 less-specific announcement

RPKI ROAs

2
PrefixOriginMax LengthTrust Anchor
121.4.8.0/21AS45090/21apnic
121.4.0.0/15AS45090/15apnic
Geolocation
Country🇨🇳ChinaCN
RegionShanghai
CityShanghai
GEThttps://api.ipctl.io/v1/prefix/121.4.8.0/21

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/121.4.8.0/21" | jq