Home Prefix Lookup240d:4000::/21

240d:4000::/21 - CNT NORTHCHINA CERNET New Technology (AS133111)

IPv6APNICallocatedAS133111CNT-NORTHCHINA CERNET New Technology Co., Ltd RPKI Valid

CIDR

240d:4000::/21

IP Version

IPv6

Addresses

162259276.8Y

Mask

/21

Country

🇨🇳 China

City

Haidian (Haidian Qu)

RIR

APNIC

Status

allocated

Allocated

2019-02-03

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
240d:4000::/21	AS133111 CNT-NORTHCHINA CERNET New Technology Co., Ltd	Valid	APNIC	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
240d:4000::/21	AS133111	/21	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS133111	APNIC	MAINT-CNTCL-CN	2019-09-20

Origin ASN

AS133111

CNT-NORTHCHINA CERNET New Technology Co., Ltd

Related Prefixes

More prefixes of AS133111

All prefixes of AS133111 →

Geolocation

Country🇨🇳ChinaCN

RegionBeijing

CityHaidian (Haidian Qu)

Coordinates39.9931, 116.3300 ↗

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/240d:4000::/21

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

curl -s "https://api.ipctl.io/v1/prefix/240d:4000::/21" | jq

External Links

RIPEstat