HomePrefix Lookup101.251.240.0/21

101.251.240.0/21

🇨🇳
IPv4APNICannouncedMOAS RPKI Valid
CIDR
101.251.240.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
announced
Allocated
-

Announced BGP Routes

2 of 2 routes
MOAS - 2 origin ASNs
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
101.251.240.0/21AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid
RADB
6/13/2026
101.251.240.0/21AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid
RADB
6/13/2026

Covering Prefix

14 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
101.251.224.0/19AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.240.0/20AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.244.0/23AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.244.0/23AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid—6/13/2026
101.251.241.0/24AS4808CHINA169-BJ - China Unicom Beijing Province Network Valid—6/13/2026
101.251.246.0/24AS4808CHINA169-BJ - China Unicom Beijing Province Network Valid—6/13/2026
101.251.243.0/24AS4808CHINA169-BJ - China Unicom Beijing Province Network Valid—6/13/2026
101.251.247.0/24AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.240.0/24AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.242.0/24AS23724CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation Valid—6/13/2026
101.251.247.0/24AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid—6/13/2026
101.251.240.0/24AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid—6/13/2026
101.251.242.0/24AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid—6/13/2026
101.251.246.0/24AS56048CMNET-BEIJING-AP - China Mobile Communicaitons Corporation Valid—6/13/2026

RPKI ROAs

4
PrefixOriginMax LengthTrust Anchor
101.251.240.0/21AS23724/21apnic
101.251.240.0/21AS56048/21apnic
101.251.240.0/20AS23724/20apnic
101.251.224.0/19AS23724/19apnic

IRR Route Objects

2
OriginRegistryMaintainerModified
AS23724RADBMAINT-AS237244/22/2026
AS56048RADBMAINT-AS5845311/13/2023
Origin ASNs (2)
AS23724MOAS
CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation
AS56048MOAS
CMNET-BEIJING-AP - China Mobile Communicaitons Corporation
Geolocation
Country🇨🇳ChinaCN
RegionBeijing
CityHaidian (Haidian Qu)
Coordinates39.9608, 116.2890 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/101.251.240.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/101.251.240.0/21" | jq
External Links
RIPEstat Hurricane Electric BGP