Home Prefix Lookup218.104.136.0/21

218.104.136.0/21 - BGP Prefix

IPv4APNICassignedNo ROA

CIDR

218.104.136.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇨🇳 China

City

Xiamen

RIR

APNIC

Status

assigned

Allocated

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not currently announced in BGP. See covering prefix below.

Covering Prefix

2 less-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
218.104.128.0/17	AS9929 CUII - CHINA UNICOM Industrial Internet Backbone	No ROA	-	2026-10-12
218.104.128.0/20	AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
218.104.128.0/20	AS4837	/20	apnic

More Specific Prefixes

100

Prefix	Country	Status
218.104.136.32/27	🇨🇳CN	assigned
218.104.136.80/29	🇨🇳CN	assigned
218.104.136.96/27	🇨🇳CN	assigned
218.104.136.128/27	🇨🇳CN	assigned
218.104.136.192/27	🇨🇳CN	assigned
218.104.136.224/27	🇨🇳CN	assigned
218.104.138.8/29	🇨🇳CN	assigned
218.104.138.16/29	🇨🇳CN	assigned
218.104.138.32/29	🇨🇳CN	assigned
218.104.138.40/29	🇨🇳CN	assigned
218.104.138.48/29	🇨🇳CN	assigned
218.104.138.56/29	🇨🇳CN	assigned
218.104.138.64/28	🇨🇳CN	assigned
218.104.138.80/28	🇨🇳CN	assigned
218.104.138.104/29	🇨🇳CN	assigned
218.104.138.112/28	🇨🇳CN	assigned
218.104.138.128/25	🇨🇳CN	assigned
218.104.139.16/29	🇨🇳CN	assigned
218.104.139.32/29	🇨🇳CN	assigned
218.104.139.40/29	🇨🇳CN	assigned
218.104.139.48/29	🇨🇳CN	assigned
218.104.139.56/29	🇨🇳CN	assigned
218.104.139.64/27	🇨🇳CN	assigned
218.104.139.96/28	🇨🇳CN	assigned
218.104.139.128/27	🇨🇳CN	assigned
218.104.139.160/27	🇨🇳CN	assigned
218.104.139.200/29	🇨🇳CN	assigned
218.104.139.208/29	🇨🇳CN	assigned
218.104.139.216/29	🇨🇳CN	assigned
218.104.139.224/28	🇨🇳CN	assigned
218.104.139.240/29	🇨🇳CN	assigned
218.104.140.0/28	🇨🇳CN	assigned
218.104.140.24/29	🇨🇳CN	assigned
218.104.140.64/29	🇨🇳CN	assigned
218.104.140.72/29	🇨🇳CN	assigned
218.104.140.80/29	🇨🇳CN	assigned
218.104.140.96/28	🇨🇳CN	assigned
218.104.140.112/29	🇨🇳CN	assigned
218.104.140.120/29	🇨🇳CN	assigned
218.104.140.144/29	🇨🇳CN	assigned
218.104.140.152/29	🇨🇳CN	assigned
218.104.140.160/29	🇨🇳CN	assigned
218.104.140.168/29	🇨🇳CN	assigned
218.104.140.184/29	🇨🇳CN	assigned
218.104.140.192/27	🇨🇳CN	assigned
218.104.140.232/29	🇨🇳CN	assigned
218.104.140.240/28	🇨🇳CN	assigned
218.104.141.0/29	🇨🇳CN	assigned
218.104.141.8/29	🇨🇳CN	assigned
218.104.141.24/29	🇨🇳CN	assigned
218.104.141.32/29	🇨🇳CN	assigned
218.104.141.48/29	🇨🇳CN	assigned
218.104.141.56/29	🇨🇳CN	assigned
218.104.141.64/29	🇨🇳CN	assigned
218.104.141.72/29	🇨🇳CN	assigned
218.104.141.80/29	🇨🇳CN	assigned
218.104.141.88/29	🇨🇳CN	assigned
218.104.141.104/29	🇨🇳CN	assigned
218.104.141.112/29	🇨🇳CN	assigned
218.104.141.120/29	🇨🇳CN	assigned
218.104.141.128/26	🇨🇳CN	assigned
218.104.141.192/29	🇨🇳CN	assigned
218.104.141.200/29	🇨🇳CN	assigned
218.104.141.208/29	🇨🇳CN	assigned
218.104.141.216/29	🇨🇳CN	assigned
218.104.141.224/29	🇨🇳CN	assigned
218.104.141.232/29	🇨🇳CN	assigned
218.104.142.0/29	🇨🇳CN	assigned
218.104.142.8/29	🇨🇳CN	assigned
218.104.142.16/29	🇨🇳CN	assigned
218.104.142.24/29	🇨🇳CN	assigned
218.104.142.32/29	🇨🇳CN	assigned
218.104.142.40/29	🇨🇳CN	assigned
218.104.142.48/29	🇨🇳CN	assigned
218.104.142.56/29	🇨🇳CN	assigned
218.104.142.64/28	🇨🇳CN	assigned
218.104.142.80/28	🇨🇳CN	assigned
218.104.142.96/28	🇨🇳CN	assigned
218.104.142.144/28	🇨🇳CN	assigned
218.104.142.160/27	🇨🇳CN	assigned
218.104.142.192/29	🇨🇳CN	assigned
218.104.142.200/29	🇨🇳CN	assigned
218.104.142.208/29	🇨🇳CN	assigned
218.104.142.216/29	🇨🇳CN	assigned
218.104.142.224/27	🇨🇳CN	assigned
218.104.143.0/29	🇨🇳CN	assigned
218.104.143.8/29	🇨🇳CN	assigned
218.104.143.16/29	🇨🇳CN	assigned
218.104.143.32/29	🇨🇳CN	assigned
218.104.143.48/28	🇨🇳CN	assigned
218.104.143.64/26	🇨🇳CN	assigned
218.104.143.64/29	🇨🇳CN	assigned
218.104.143.152/29	🇨🇳CN	assigned
218.104.143.160/28	🇨🇳CN	assigned
218.104.143.176/29	🇨🇳CN	assigned
218.104.143.192/28	🇨🇳CN	assigned
218.104.143.208/28	🇨🇳CN	assigned
218.104.143.224/29	🇨🇳CN	assigned
218.104.143.232/29	🇨🇳CN	assigned
218.104.143.248/29	🇨🇳CN	assigned

Related Prefixes

Covering prefix

218.104.128.0/20AS4837

Geolocation

Country🇨🇳ChinaCN

RegionFujian

CityXiamen

Coordinates24.4795, 118.0890 ↗

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/218.104.136.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/218.104.136.0/21" | jq

External Links

RIPEstat