Home Prefix Lookup123.157.0.0/16

123.157.0.0/16

🇨🇳

IPv4APNICannouncedAS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone RPKI Valid

CIDR

123.157.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇨🇳 China

City

Hangzhou

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Prefix	Origin AS	RPKI	IRR	Last Seen
123.157.0.0/16	AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone	Valid	RADB	6/13/2026

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
123.152.0.0/13	AS4837CHINA169-Backbone - CHINA UNICOM China169 Backbone	Valid	—	6/13/2026

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
123.157.0.0/16	AS4837	/16	apnic
123.152.0.0/13	AS4837	/13	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4837	RADB	MAINT-AS10099	7/1/2024

More Specific Prefixes

100

Prefix	Country	Status
123.157.24.0/21	🇨🇳CN	assigned
123.157.20.0/22	🇨🇳CN	assigned
123.157.19.0/24	🇨🇳CN	assigned
123.157.100.0/25	🇨🇳CN	assigned
123.157.99.0/26	🇨🇳CN	assigned
123.157.100.128/26	🇨🇳CN	assigned
123.157.99.64/26	🇨🇳CN	assigned
123.157.5.192/27	🇨🇳CN	assigned
123.157.97.192/27	🇨🇳CN	assigned
123.157.97.224/27	🇨🇳CN	assigned
123.157.97.128/27	🇨🇳CN	assigned
123.157.255.0/27	🇨🇳CN	assigned
123.157.255.32/27	🇨🇳CN	assigned
123.157.97.96/27	🇨🇳CN	assigned
123.157.97.160/28	🇨🇳CN	assigned
123.157.244.64/28	🇨🇳CN	assigned
123.157.136.128/28	🇨🇳CN	assigned
123.157.245.144/28	🇨🇳CN	assigned
123.157.141.224/28	🇨🇳CN	assigned
123.157.242.64/28	🇨🇳CN	assigned
123.157.5.160/28	🇨🇳CN	assigned
123.157.97.176/28	🇨🇳CN	assigned
123.157.237.144/28	🇨🇳CN	assigned
123.157.242.128/28	🇨🇳CN	assigned
123.157.252.144/28	🇨🇳CN	assigned
123.157.242.208/28	🇨🇳CN	assigned
123.157.100.240/28	🇨🇳CN	assigned
123.157.249.48/28	🇨🇳CN	assigned
123.157.140.80/28	🇨🇳CN	assigned
123.157.137.16/28	🇨🇳CN	assigned
123.157.248.88/29	🇨🇳CN	assigned
123.157.136.88/29	🇨🇳CN	assigned
123.157.245.168/29	🇨🇳CN	assigned
123.157.233.72/29	🇨🇳CN	assigned
123.157.248.80/29	🇨🇳CN	assigned
123.157.140.72/29	🇨🇳CN	assigned
123.157.100.224/29	🇨🇳CN	assigned
123.157.13.144/29	🇨🇳CN	assigned
123.157.140.184/29	🇨🇳CN	assigned
123.157.97.24/29	🇨🇳CN	assigned
123.157.1.200/29	🇨🇳CN	assigned
123.157.250.144/29	🇨🇳CN	assigned
123.157.248.72/29	🇨🇳CN	assigned
123.157.141.216/29	🇨🇳CN	assigned
123.157.100.232/29	🇨🇳CN	assigned
123.157.97.72/29	🇨🇳CN	assigned
123.157.232.0/29	🇨🇳CN	assigned
123.157.141.8/29	🇨🇳CN	assigned
123.157.2.160/29	🇨🇳CN	assigned
123.157.241.240/29	🇨🇳CN	assigned
123.157.0.8/29	🇨🇳CN	assigned
123.157.4.120/29	🇨🇳CN	assigned
123.157.98.56/29	🇨🇳CN	assigned
123.157.100.216/29	🇨🇳CN	assigned
123.157.232.56/29	🇨🇳CN	assigned
123.157.244.248/29	🇨🇳CN	assigned
123.157.241.64/29	🇨🇳CN	assigned
123.157.245.56/29	🇨🇳CN	assigned
123.157.3.152/29	🇨🇳CN	assigned
123.157.248.136/29	🇨🇳CN	assigned
123.157.97.8/29	🇨🇳CN	assigned
123.157.97.48/29	🇨🇳CN	assigned
123.157.140.144/29	🇨🇳CN	assigned
123.157.142.160/29	🇨🇳CN	assigned
123.157.139.80/29	🇨🇳CN	assigned
123.157.136.144/29	🇨🇳CN	assigned
123.157.136.96/29	🇨🇳CN	assigned
123.157.136.216/29	🇨🇳CN	assigned
123.157.140.96/29	🇨🇳CN	assigned
123.157.254.64/29	🇨🇳CN	assigned
123.157.97.32/29	🇨🇳CN	assigned
123.157.250.112/29	🇨🇳CN	assigned
123.157.254.152/29	🇨🇳CN	assigned
123.157.245.208/29	🇨🇳CN	assigned
123.157.245.200/29	🇨🇳CN	assigned
123.157.250.104/29	🇨🇳CN	assigned
123.157.254.16/29	🇨🇳CN	assigned
123.157.254.32/29	🇨🇳CN	assigned
123.157.248.32/29	🇨🇳CN	assigned
123.157.244.232/29	🇨🇳CN	assigned
123.157.137.0/29	🇨🇳CN	assigned
123.157.137.152/29	🇨🇳CN	assigned
123.157.244.8/29	🇨🇳CN	assigned
123.157.141.0/29	🇨🇳CN	assigned
123.157.245.88/29	🇨🇳CN	assigned
123.157.248.192/29	🇨🇳CN	assigned
123.157.254.208/29	🇨🇳CN	assigned
123.157.241.168/29	🇨🇳CN	assigned
123.157.241.40/29	🇨🇳CN	assigned
123.157.97.0/29	🇨🇳CN	assigned
123.157.241.200/29	🇨🇳CN	assigned
123.157.98.0/29	🇨🇳CN	assigned
123.157.240.240/29	🇨🇳CN	assigned
123.157.237.136/29	🇨🇳CN	assigned
123.157.240.248/29	🇨🇳CN	assigned
123.157.242.16/29	🇨🇳CN	assigned
123.157.234.56/29	🇨🇳CN	assigned
123.157.136.64/29	🇨🇳CN	assigned
123.157.233.80/29	🇨🇳CN	assigned
123.157.235.32/29	🇨🇳CN	assigned

Origin ASN

AS4837

CHINA169-Backbone - CHINA UNICOM China169 Backbone

Geolocation

Country🇨🇳ChinaCN

RegionZhejiang

CityHangzhou

Coordinates30.2742, 120.1550 ↗

API

Open

GEThttps://api.ipctl.io/v1/prefix/123.157.0.0/16

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

curl -s "https://api.ipctl.io/v1/prefix/123.157.0.0/16" | jq

External Links

RIPEstat Hurricane Electric BGP