Home Prefix Lookup121.28.0.0/15

121.28.0.0/15

🇨🇳

IPv4APNICallocatedAS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone RPKI Valid

CIDR

121.28.0.0/15

IP Version

IPv4

Addresses

131K

Mask

/15 (255.254.0.0)

Country

🇨🇳 China

City

Shijiazhuang

RIR

APNIC

Status

allocated

Allocated

5/8/2006

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
121.28.0.0/15	AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone	Valid	APNICRADB	6/13/2026

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
121.29.26.0/24	AS9929CUII - CHINA UNICOM Industrial Internet Backbone	Valid	—	6/13/2026

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
121.28.0.0/15	AS4837	/15	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4837	APNIC	MAINT-CNCGROUP-RR	9/4/2008
AS4837	RADB	MAINT-AS58453	11/13/2023

More Specific Prefixes

100

Prefix	Country	Status
121.28.183.0/24	🇨🇳CN	assigned
121.28.17.0/24	🇨🇳CN	assigned
121.28.202.128/25	🇨🇳CN	assigned
121.28.202.0/25	🇨🇳CN	assigned
121.28.223.128/25	🇨🇳CN	assigned
121.28.223.0/25	🇨🇳CN	assigned
121.28.24.192/26	🇨🇳CN	assigned
121.28.82.128/26	🇨🇳CN	assigned
121.28.245.192/26	🇨🇳CN	assigned
121.28.80.192/26	🇨🇳CN	assigned
121.28.2.192/26	🇨🇳CN	assigned
121.28.2.0/26	🇨🇳CN	assigned
121.28.24.0/26	🇨🇳CN	assigned
121.28.101.0/27	🇨🇳CN	assigned
121.28.100.64/27	🇨🇳CN	assigned
121.28.49.160/27	🇨🇳CN	assigned
121.28.44.96/27	🇨🇳CN	assigned
121.28.51.128/27	🇨🇳CN	assigned
121.28.203.128/27	🇨🇳CN	assigned
121.28.5.160/27	🇨🇳CN	assigned
121.28.179.64/27	🇨🇳CN	assigned
121.28.24.96/27	🇨🇳CN	assigned
121.28.82.32/27	🇨🇳CN	assigned
121.28.34.0/27	🇨🇳CN	assigned
121.28.48.208/28	🇨🇳CN	assigned
121.28.150.208/28	🇨🇳CN	assigned
121.28.74.128/28	🇨🇳CN	assigned
121.28.81.32/28	🇨🇳CN	assigned
121.28.245.0/28	🇨🇳CN	assigned
121.28.25.32/28	🇨🇳CN	assigned
121.28.72.192/28	🇨🇳CN	assigned
121.28.3.240/28	🇨🇳CN	assigned
121.28.180.32/28	🇨🇳CN	assigned
121.28.74.48/28	🇨🇳CN	assigned
121.28.83.192/28	🇨🇳CN	assigned
121.28.81.80/28	🇨🇳CN	assigned
121.28.76.16/28	🇨🇳CN	assigned
121.28.81.96/28	🇨🇳CN	assigned
121.28.80.64/28	🇨🇳CN	assigned
121.28.72.64/28	🇨🇳CN	assigned
121.28.74.144/28	🇨🇳CN	assigned
121.28.81.64/28	🇨🇳CN	assigned
121.28.147.224/28	🇨🇳CN	assigned
121.28.74.16/28	🇨🇳CN	assigned
121.28.76.64/28	🇨🇳CN	assigned
121.28.76.240/28	🇨🇳CN	assigned
121.28.83.16/28	🇨🇳CN	assigned
121.28.101.160/28	🇨🇳CN	assigned
121.28.50.64/28	🇨🇳CN	assigned
121.28.165.80/28	🇨🇳CN	assigned
121.28.48.224/28	🇨🇳CN	assigned
121.28.74.192/28	🇨🇳CN	assigned
121.28.34.48/28	🇨🇳CN	assigned
121.28.4.144/28	🇨🇳CN	assigned
121.28.49.64/28	🇨🇳CN	assigned
121.28.169.48/28	🇨🇳CN	assigned
121.28.134.240/28	🇨🇳CN	assigned
121.28.146.64/28	🇨🇳CN	assigned
121.28.81.192/28	🇨🇳CN	assigned
121.28.0.32/28	🇨🇳CN	assigned
121.28.3.144/28	🇨🇳CN	assigned
121.28.24.128/28	🇨🇳CN	assigned
121.28.7.64/28	🇨🇳CN	assigned
121.28.3.224/28	🇨🇳CN	assigned
121.28.24.80/28	🇨🇳CN	assigned
121.28.1.32/28	🇨🇳CN	assigned
121.28.3.128/28	🇨🇳CN	assigned
121.28.25.192/28	🇨🇳CN	assigned
121.28.91.176/28	🇨🇳CN	assigned
121.28.7.112/28	🇨🇳CN	assigned
121.28.83.160/28	🇨🇳CN	assigned
121.28.83.240/28	🇨🇳CN	assigned
121.28.98.48/28	🇨🇳CN	assigned
121.28.97.96/28	🇨🇳CN	assigned
121.28.3.176/28	🇨🇳CN	assigned
121.28.34.32/28	🇨🇳CN	assigned
121.28.4.192/28	🇨🇳CN	assigned
121.28.5.192/28	🇨🇳CN	assigned
121.28.27.80/28	🇨🇳CN	assigned
121.28.27.128/28	🇨🇳CN	assigned
121.28.44.48/28	🇨🇳CN	assigned
121.28.48.32/28	🇨🇳CN	assigned
121.28.50.0/28	🇨🇳CN	assigned
121.28.50.32/28	🇨🇳CN	assigned
121.28.51.160/28	🇨🇳CN	assigned
121.28.132.224/28	🇨🇳CN	assigned
121.28.208.176/28	🇨🇳CN	assigned
121.28.208.192/28	🇨🇳CN	assigned
121.28.72.224/28	🇨🇳CN	assigned
121.28.73.0/28	🇨🇳CN	assigned
121.28.76.32/28	🇨🇳CN	assigned
121.28.50.144/28	🇨🇳CN	assigned
121.28.76.80/28	🇨🇳CN	assigned
121.28.76.96/28	🇨🇳CN	assigned
121.28.2.160/28	🇨🇳CN	assigned
121.28.83.144/28	🇨🇳CN	assigned
121.28.98.128/28	🇨🇳CN	assigned
121.28.100.32/28	🇨🇳CN	assigned
121.28.100.240/28	🇨🇳CN	assigned
121.28.25.208/28	🇨🇳CN	assigned

Origin ASN

AS4837

CHINA169-Backbone - CHINA UNICOM China169 Backbone

Geolocation

Country🇨🇳ChinaCN

RegionHebei

CityShijiazhuang

Coordinates38.0133, 114.7440 ↗

API

Open

GEThttps://api.ipctl.io/v1/prefix/121.28.0.0/15

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

curl -s "https://api.ipctl.io/v1/prefix/121.28.0.0/15" | jq

External Links

RIPEstat Hurricane Electric BGP