Home ASN LookupAS24239

AS24239 TWD2-NET-AS-AP - TWD2 Education and Research Network

🇨🇳

Org handle: ORG-TEAR2-AP

TWD2 Education and Research Network

APNICallocated

Announced Prefixes (BGP)

12total

0 IPv412 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)0

IPv6 Addresses

Allocated (RIR)3.1×10²⁵

Announced (BGP)5×10²⁵

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇨🇳 CN

RIR

APNIC

Status

allocated

Allocated

2019-03-12

Routing hygiene

Score 6/100 · Low risk

RPKI ROA coverage

100%

no RPKI invalid prefixes

IRR route objects

100%

no origin mismatches

Hijack signals

0 announced against others' ROAs, 0 own announced by others

Upstreams

diversity 44/100

All announced prefixes have a valid ROA and a matching IRR route object

Based on 12 announced prefixes, updated daily (2026-10-27). How the score works · RPKI explained

Announced Prefixes

(BGP)12

Prefix	RPKI	IRR	Last Seen
2404:f4c0:f000::/44MOAS	Valid	APNIC	2026-10-27
2a0c:b641:571::/48	Valid	-	2026-10-27
2a0e:aa06:490::/44	Valid	RIPE	2026-10-27
2a0e:aa06:490::/48	Valid	-	2026-10-27
2a0e:aa06:491::/48	Valid	-	2026-10-27
2a0e:aa06:492::/48	Valid	-	2026-10-27
2a0e:aa06:493::/48	Valid	-	2026-10-27
2a0e:aa06:494::/48	Valid	-	2026-10-27
2a0e:aa06:495::/48	Valid	-	2026-10-27
2a0e:aa06:496::/48	Valid	-	2026-10-27

1-10 of 12

1 / 2

Allocated Prefixes

(RIR)11

Prefix	Country	RIR	Status
2a0c:b641:571::/48	🇯🇵 JP	RIPE	assigned
2a0e:aa06:490::/44	🇬🇧 GB	RIPE	assigned
2a0e:aa06:490::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:491::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:492::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:493::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:494::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:495::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:496::/48	🇬🇧 GB	RIPE	assigned
2a0e:aa06:497::/48	🇬🇧 GB	RIPE	assigned

1-10 of 11

1 / 2

All 12 announced prefixes of AS24239 →

Downstream Customers(1)

ASN	Name
AS209300	🇨🇳TWD2-NET Wende Tan

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS24239 hands its own prefixes to: transit providers, or peers at an exchange.

AS4842Tianhai InfoTech8
AS209300TWD2 NET Wende Tan4

Other adjacent networks (3)

Adjacent to AS24239 in the transit part of AS paths: peers, providers or customers.

AS6939Hurricane Electric3
AS38255China Education And Research Network (CERNET)2
AS45576Tsinghua University1

Transfer History

Registry transfers of AS24239 between organisations.

AS24239Transfer · 2020-05-11
LightNetwork Computing Limited
🇭🇰 HK APNIC
→
Tianhai InfoTech
🇨🇳 CN APNIC

Date	Resource	From	To	Type
2020-05-11	AS24239	LightNetwork Computing Limited 🇭🇰 HK APNIC	Tianhai InfoTech 🇨🇳 CN APNIC	Transfer

ASPA

No ASPA0 upstreams, 1 downstream

Listed as Upstream Provider by

1 ASN

View full ASPA details →

External Links

APNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
How to run an ASPA checkVerify the upstream providers listed above
IPv4 transfers in the APNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/24239

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/24239" | jq