HomePrefix Lookup121.16.0.0/13

121.16.0.0/13

🇨🇳
IPv4APNICallocatedAS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone RPKI Valid
CIDR
121.16.0.0/13
IP Version
IPv4
Addresses
524.2K
Mask
/13 (255.248.0.0)
Country
🇨🇳 China
City
Chengde
RIR
APNIC
Status
allocated
Allocated
5/8/2006

Announced BGP Routes

1 of 1 route
RPKI:
IRR:
PrefixOrigin ASRPKIIRRLast Seen
121.16.0.0/13AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone Valid
APNICRADB
6/13/2026

Covering Prefix

1 less-specific announcement
PrefixOrigin ASRPKIIRRLast Seen
121.22.41.0/24AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone Valid—6/13/2026

RPKI ROAs

1
PrefixOriginMax LengthTrust Anchor
121.16.0.0/13AS4837/13apnic

IRR Route Objects

2
OriginRegistryMaintainerModified
AS4837APNICMAINT-CNCGROUP-RR9/4/2008
AS4837RADBMAINT-AS5845311/13/2023

More Specific Prefixes

100
PrefixASCountryStatus
121.23.0.0/16🇨🇳CNassigned
121.17.144.0/21🇨🇳CNassigned
121.17.172.0/22🇨🇳CNassigned
121.17.170.0/23🇨🇳CNassigned
121.17.186.0/23🇨🇳CNassigned
121.17.16.0/23🇨🇳CNassigned
121.17.4.0/23🇨🇳CNassigned
121.17.22.0/23🇨🇳CNassigned
121.17.18.0/23🇨🇳CNassigned
121.17.14.0/23🇨🇳CNassigned
121.17.24.0/23🇨🇳CNassigned
121.17.166.0/23🇨🇳CNassigned
121.17.28.0/23🇨🇳CNassigned
121.17.184.0/23🇨🇳CNassigned
121.17.168.0/23🇨🇳CNassigned
121.17.20.0/23🇨🇳CNassigned
121.17.190.0/23🇨🇳CNassigned
121.17.140.0/23🇨🇳CNassigned
121.17.26.0/23🇨🇳CNassigned
121.17.44.0/23🇨🇳CNassigned
121.17.46.0/23🇨🇳CNassigned
121.17.40.0/24🇨🇳CNassigned
121.17.178.0/24🇨🇳CNassigned
121.17.179.0/24🇨🇳CNassigned
121.17.128.0/24🇨🇳CNassigned
121.17.31.0/24🇨🇳CNassigned
121.17.177.0/24🇨🇳CNassigned
121.17.164.0/24🇨🇳CNassigned
121.18.255.0/24🇨🇳CNassigned
121.17.30.0/24🇨🇳CNassigned
121.17.158.0/24🇨🇳CNassigned
121.17.129.0/24🇨🇳CNassigned
121.17.36.0/24🇨🇳CNassigned
121.17.132.0/24🇨🇳CNassigned
121.17.181.0/24🇨🇳CNassigned
121.17.163.0/24🇨🇳CNassigned
121.17.182.0/24🇨🇳CNassigned
121.17.3.0/24🇨🇳CNassigned
121.17.188.0/24🇨🇳CNassigned
121.17.134.0/24🇨🇳CNassigned
121.17.156.0/24🇨🇳CNassigned
121.17.33.0/24🇨🇳CNassigned
121.17.160.0/24🇨🇳CNassigned
121.17.162.0/24🇨🇳CNassigned
121.17.6.0/24🇨🇳CNassigned
121.17.165.0/24🇨🇳CNassigned
121.17.34.0/24🇨🇳CNassigned
121.17.176.0/24🇨🇳CNassigned
121.17.41.0/24🇨🇳CNassigned
121.17.42.0/24🇨🇳CNassigned
121.17.131.0/24🇨🇳CNassigned
121.17.130.0/24🇨🇳CNassigned
121.17.138.0/24🇨🇳CNassigned
121.17.136.0/24🇨🇳CNassigned
121.17.2.0/24🇨🇳CNassigned
121.18.16.0/24🇨🇳CNassigned
121.17.37.0/24🇨🇳CNassigned
121.17.180.0/24🇨🇳CNassigned
121.17.32.0/24🇨🇳CNassigned
121.17.0.0/24🇨🇳CNassigned
121.17.43.0/24🇨🇳CNassigned
121.17.1.0/24🇨🇳CNassigned
121.18.18.0/24🇨🇳CNassigned
121.17.161.0/24🇨🇳CNassigned
121.17.35.0/24🇨🇳CNassigned
121.18.64.128/25🇨🇳CNassigned
121.18.36.0/25🇨🇳CNassigned
121.17.154.128/25🇨🇳CNassigned
121.17.153.0/25🇨🇳CNassigned
121.17.152.0/25🇨🇳CNassigned
121.17.152.128/25🇨🇳CNassigned
121.17.153.128/25🇨🇳CNassigned
121.17.154.0/25🇨🇳CNassigned
121.17.157.0/25🇨🇳CNassigned
121.22.25.0/26🇨🇳CNassigned
121.22.11.0/26🇨🇳CNassigned
121.18.254.128/26🇨🇳CNassigned
121.18.52.64/27🇨🇳CNassigned
121.22.24.64/27🇨🇳CNassigned
121.17.30.64/27🇨🇳CNassigned
121.17.46.64/27🇨🇳CNassigned
121.17.30.32/27🇨🇳CNassigned
121.18.90.128/27🇨🇳CNassigned
121.22.25.96/27🇨🇳CNassigned
121.22.9.224/27🇨🇳CNassigned
121.22.24.96/27🇨🇳CNassigned
121.22.44.0/27🇨🇳CNassigned
121.18.66.128/27🇨🇳CNassigned
121.17.7.0/27🇨🇳CNassigned
121.18.251.0/27🇨🇳CNassigned
121.18.65.224/27🇨🇳CNassigned
121.22.8.0/27🇨🇳CNassigned
121.18.10.64/28🇨🇳CNassigned
121.18.249.64/28🇨🇳CNassigned
121.18.12.32/28🇨🇳CNassigned
121.18.4.16/28🇨🇳CNassigned
121.18.8.0/28🇨🇳CNassigned
121.18.12.64/28🇨🇳CNassigned
121.17.174.32/28🇨🇳CNassigned
121.18.2.16/28🇨🇳CNassigned
Origin ASN
AS4837
CHINA169-Backbone - CHINA UNICOM China169 Backbone
Geolocation
Country🇨🇳ChinaCN
RegionHebei
CityChengde
Coordinates40.9515, 117.9630 ↗
API
Open
GEThttps://api.ipctl.io/v1/prefix/121.16.0.0/13

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

curl -s "https://api.ipctl.io/v1/prefix/121.16.0.0/13" | jq
External Links
RIPEstat Hurricane Electric BGP