HomePrefix Lookup183.172.0.0/14

183.172.0.0/14

🇨🇳
IPv4APNICallocatedAS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
CIDR
183.172.0.0/14
IP Version
IPv4
Addresses
262.1K
Mask
/14 (255.252.0.0)
Country
🇨🇳 China
City
Haidian (Haidian Qu)
RIR
APNIC
Status
allocated
Allocated
11/25/2009

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
183.172.0.0/14AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
APNICRADB
5/31/2026

Covering Prefix

35 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
183.172.0.0/15AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/15AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.173.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.174.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.0.0/16AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.172.0.0/16AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.174.0.0/16AS24349CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking UniversityNo ROA—5/31/2026
183.174.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.174.128.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.128.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.128.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.172.128.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.174.128.0/17AS24349CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking UniversityNo ROA—5/31/2026
183.174.0.0/17AS24349CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking UniversityNo ROA—5/31/2026
183.173.0.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.64.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.128.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.175.0.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.192.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.64.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.173.192.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.128.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
183.172.0.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.172.64.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.172.128.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.172.192.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.173.64.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.173.192.0/18AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
183.175.0.0/18AS138375CNGI-HHT-IX-AS-AP - CERNET2 regional IX at Inner Mongolia UniversityNo ROA—5/31/2026
183.175.128.0/19AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4538APNICMAINT-CERNET-AP11/25/2009
AS4538RADBMAINT-AS463711/13/2023
Origin ASN
AS4538
ERX-CERNET-BKB - China Education and Research Network Center
Geolocation
Country🇨🇳ChinaCN
RegionBeijing
CityHaidian (Haidian Qu)
Coordinates40.0045, 116.3290 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/183.172.0.0/14

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

curl -s "https://api.ipctl.io/v1/prefix/183.172.0.0/14" | jq
External Links
RIPEstat Hurricane Electric BGP