Home Prefix Lookup220.231.40.0/21

220.231.40.0/21 - CHINANET IDC BJ AP IDC, China Telecommunications Corporation (AS23724)

IPv4APNICannouncedAS23724CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation RPKI Valid

CIDR

220.231.40.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇨🇳 China

City

Langfang

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
220.231.40.0/21	AS23724 CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation	Valid	Other IRR	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
220.231.40.0/21	AS23724	/21	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS23724	Other IRR	MAINT-AS23724	2026-04-22

More Specific Prefixes

Prefix	Country	Status
220.231.40.0/26	🇨🇳CN	assigned
220.231.40.64/26	🇨🇳CN	assigned
220.231.40.128/27	🇨🇳CN	assigned
220.231.40.160/28	🇨🇳CN	assigned
220.231.40.176/28	🇨🇳CN	assigned
220.231.40.192/27	🇨🇳CN	assigned
220.231.40.224/28	🇨🇳CN	assigned
220.231.40.240/28	🇨🇳CN	assigned
220.231.41.0/26	🇨🇳CN	assigned
220.231.41.64/27	🇨🇳CN	assigned
220.231.41.96/27	🇨🇳CN	assigned
220.231.41.128/25	🇨🇳CN	assigned
220.231.42.0/26	🇨🇳CN	assigned
220.231.42.64/26	🇨🇳CN	assigned
220.231.42.128/26	🇨🇳CN	assigned
220.231.42.192/26	🇨🇳CN	assigned
220.231.43.0/27	🇨🇳CN	assigned
220.231.43.64/26	🇨🇳CN	assigned
220.231.43.128/26	🇨🇳CN	assigned
220.231.43.192/27	🇨🇳CN	assigned
220.231.44.0/26	🇨🇳CN	assigned
220.231.44.64/26	🇨🇳CN	assigned
220.231.44.128/26	🇨🇳CN	assigned
220.231.44.192/26	🇨🇳CN	assigned
220.231.45.0/26	🇨🇳CN	assigned
220.231.45.64/26	🇨🇳CN	assigned
220.231.45.128/25	🇨🇳CN	assigned
220.231.46.0/26	🇨🇳CN	assigned
220.231.46.64/28	🇨🇳CN	assigned
220.231.46.80/28	🇨🇳CN	assigned
220.231.46.128/26	🇨🇳CN	assigned
220.231.46.192/26	🇨🇳CN	assigned
220.231.47.0/24	🇨🇳CN	assigned

Origin ASN

AS23724

CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation

Related Prefixes

More prefixes of AS23724

All prefixes of AS23724 →

Geolocation

Country🇨🇳ChinaCN

RegionHebei

CityLangfang

Coordinates39.5378, 116.6840 ↗

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/220.231.40.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/220.231.40.0/21" | jq

External Links

RIPEstat