Home Prefix Lookup121.11.156.0/23

121.11.156.0/23 - CHINATELECOM Guangdong Province Zhongshan 5G Network (AS140309)

IPv4APNICannouncedAS140309CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK - CHINATELECOM Guangdong province Zhongshan 5G network RPKI Invalid

CIDR

121.11.156.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇨🇳 China

City

Guangzhou

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
121.11.156.0/23	AS140309 CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK - CHINATELECOM Guangdong province Zhongshan 5G network	Invalid	-	2026-10-12

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
121.8.0.0/13	AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
121.8.0.0/13	AS4134	/13	apnic

More Specific Prefixes

Prefix	Country	Status
121.11.156.48/30	🇨🇳CN	assigned
121.11.156.96/30	🇨🇳CN	assigned
121.11.156.108/30	🇨🇳CN	assigned
121.11.156.112/28	🇨🇳CN	assigned
121.11.156.140/30	🇨🇳CN	assigned
121.11.156.144/30	🇨🇳CN	assigned
121.11.156.184/29	🇨🇳CN	assigned
121.11.156.200/30	🇨🇳CN	assigned
121.11.156.224/30	🇨🇳CN	assigned
121.11.156.240/30	🇨🇳CN	assigned
121.11.157.0/30	🇨🇳CN	assigned
121.11.157.72/30	🇨🇳CN	assigned
121.11.157.88/30	🇨🇳CN	assigned
121.11.157.108/30	🇨🇳CN	assigned
121.11.157.112/30	🇨🇳CN	assigned
121.11.157.132/30	🇨🇳CN	assigned
121.11.157.136/30	🇨🇳CN	assigned
121.11.157.140/30	🇨🇳CN	assigned
121.11.157.148/30	🇨🇳CN	assigned
121.11.157.168/30	🇨🇳CN	assigned
121.11.157.172/30	🇨🇳CN	assigned
121.11.157.188/30	🇨🇳CN	assigned
121.11.157.236/30	🇨🇳CN	assigned
121.11.157.244/30	🇨🇳CN	assigned
121.11.157.252/30	🇨🇳CN	assigned

Origin ASN

AS140309

CHINATELECOM-GUANGDONG-ZHONGSHAN-5G-NETWORK - CHINATELECOM Guangdong province Zhongshan 5G network

Related Prefixes

Covering prefix

121.8.0.0/13AS4134

More prefixes of AS140309

All prefixes of AS140309 →

Geolocation

Country🇨🇳ChinaCN

RegionGuangdong

CityGuangzhou

Coordinates23.1317, 113.2660 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the APNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/121.11.156.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/121.11.156.0/23" | jq

External Links

RIPEstat