HomePrefix Lookup101.4.0.0/14

101.4.0.0/14

🇨🇳
IPv4APNICallocatedAS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
CIDR
101.4.0.0/14
IP Version
IPv4
Addresses
262.1K
Mask
/14 (255.252.0.0)
Country
🇨🇳 China
City
Fengtai (Fengtai Qu)
RIR
APNIC
Status
allocated
Allocated
12/9/2010

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
101.4.0.0/14AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA
APNICRADB
5/31/2026

Covering Prefix

64 less-specific announcements
PrefixOrigin ASRPKIIRRLast Seen
101.6.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.0.0/16AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.6.0.0/16AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.0.0/16AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.6.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.0.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.128.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.6.128.0/17AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.6.128.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.6.0.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.128.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.0.0/17AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.4.192.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.128.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.64.0/18AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.128.0/18AS138374CNGI-TYN-IX-AS-AP - CERNET2 regional IX at Taiyuan UniversityNo ROA—5/31/2026
101.7.64.0/18AS138375CNGI-HHT-IX-AS-AP - CERNET2 regional IX at Inner Mongolia UniversityNo ROA—5/31/2026
101.4.16.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.0.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.64.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.32.0/20AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.32.0/20AS24349CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking UniversityNo ROA—5/31/2026
101.4.16.0/20AS24350CNGI-BJ-IX4-AS-AP - CERNET2 IX at Beijing University of Posts and TelecommunicationsNo ROA—5/31/2026
101.4.0.0/20AS24350CNGI-BJ-IX4-AS-AP - CERNET2 IX at Beijing University of Posts and TelecommunicationsNo ROA—5/31/2026
101.4.64.0/20AS24350CNGI-BJ-IX4-AS-AP - CERNET2 IX at Beijing University of Posts and TelecommunicationsNo ROA—5/31/2026
101.4.80.0/20AS133111CNT-northChina - CERNET New Technology Co., LtdNo ROA—5/31/2026
101.7.224.0/20AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—5/31/2026
101.7.192.0/20AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—5/31/2026
101.5.128.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.136.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.24.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.40.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.48.0/21AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.5.136.0/21AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.40.0/21AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.128.0/21AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.5.24.0/21AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.4.48.0/21AS24349CNGI-BJ-IX3-AS-AP - CERNET2 IX at Peking UniversityNo ROA—5/31/2026
101.7.0.0/22AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.96.0/22AS133111CNT-northChina - CERNET New Technology Co., LtdNo ROA—5/31/2026
101.7.208.0/22AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—5/31/2026
101.7.0.0/22AS138375CNGI-HHT-IX-AS-AP - CERNET2 regional IX at Inner Mongolia UniversityNo ROA—5/31/2026
101.6.16.0/23AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.6.16.0/23AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.4.162.0/23AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—5/31/2026
101.4.160.0/23AS138182CNGI-SJZ-IX-AS-AP - CERNET2 regional IX at Hebei Normal UniversityNo ROA—5/31/2026
101.6.6.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.128.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.63.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.7.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.56.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.140.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.2.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.160.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.4.156.0/24AS4538ERX-CERNET-BKB - China Education and Research Network CenterNo ROA—5/31/2026
101.7.7.0/24AS9405TPS-CN-AS - Test platform Service CenterNo ROA—5/31/2026
101.4.63.0/24AS24348CNGI-BJ-IX2-AS-AP - CERNET2 IX at Tsinghua UniversityNo ROA—5/31/2026
101.4.128.0/24AS24363CNGI-JNN-IX-AS-AP - CERNET2 IX at Shandong UniversityNo ROA—5/31/2026
101.4.156.0/24AS131490CERT-Cor - CERNET CorporationNo ROA—5/31/2026
101.4.141.0/24AS133111CNT-northChina - CERNET New Technology Co., LtdNo ROA—5/31/2026
101.4.130.0/24AS133111CNT-northChina - CERNET New Technology Co., LtdNo ROA—5/31/2026
101.7.8.0/24AS133111CNT-northChina - CERNET New Technology Co., LtdNo ROA—5/31/2026
101.4.96.0/24AS134169CERNEWTECHRES-AS-CN - CERNEWTECH (Beijing) co.,LTDNo ROA—5/31/2026
101.7.160.0/24AS138374CNGI-TYN-IX-AS-AP - CERNET2 regional IX at Taiyuan UniversityNo ROA—5/31/2026

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4538APNICMAINT-CERNET-AP12/13/2010
AS4538RADBMAINT-AS463711/13/2023
Origin ASN
AS4538
ERX-CERNET-BKB - China Education and Research Network Center
Geolocation
Country🇨🇳ChinaCN
RegionBeijing
CityFengtai (Fengtai Qu)
Coordinates39.8565, 116.2850 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/101.4.0.0/14

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

curl -s "https://api.ipctl.io/v1/prefix/101.4.0.0/14" | jq
External Links
RIPEstat Hurricane Electric BGP