Home Prefix Lookup203.207.208.0/20

203.207.208.0/20 - China Unicom Beijing Province Network (AS4808)

IPv4APNICallocatedAS4808CHINA169-BJ - China Unicom Beijing Province Network RPKI Valid

CIDR

203.207.208.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇨🇳 China

City

Beijing

RIR

APNIC

Status

allocated

Allocated

1997-06-17

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
203.207.208.0/20	AS4808 CHINA169-BJ - China Unicom Beijing Province Network	Valid	-	2026-10-13

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.207.208.0/20	AS4808	/20	apnic

Transfer History

Registry transfers of 203.207.208.0/20, blocks inside it, or blocks containing it.

203.207.208.0/20Transfer · 2016-04-07
The State Information Center of P.R.China
🇨🇳 CN APNIC
→
China Internet Network Information Center/DXTNET
🇨🇳 CN APNIC

Date	Resource	From	To	Type
2016-04-07	203.207.208.0/20	The State Information Center of P.R.China 🇨🇳 CN APNIC	China Internet Network Information Center/DXTNET 🇨🇳 CN APNIC	Transfer

Origin ASN

AS4808

CHINA169-BJ - China Unicom Beijing Province Network

Related Prefixes

More prefixes of AS4808

All prefixes of AS4808 →

Geolocation

Country🇨🇳ChinaCN

RegionBeijing

CityBeijing

Coordinates39.9042, 116.4070 ↗

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/203.207.208.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/203.207.208.0/20" | jq

External Links

RIPEstat