Home ASN LookupAS138381

AS138381 CNGI-GYN-IX-AS-AP - CERNET2 regional IX at Guizhou University

🇨🇳

Org handle: ORG-CEAR1-AP

CERNET2 regional IX at Guizhou University

APNICallocated

Announced Prefixes (BGP)

114total

54 IPv460 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)101,888

IPv6 Addresses

Allocated (RIR)1.2×10²⁴

Announced (BGP)7.2×10²⁵

Prefix Limit (IPv4)

200

Prefix Limit (IPv6)

200

Country

🇨🇳 CN

RIR

APNIC

Status

allocated

Allocated

2018-10-26

Routing hygiene

Score 69/100 · High risk

RPKI ROA coverage

52.6%

30 prefixes RPKI invalid

IRR route objects

114 prefixes registered for another origin

Hijack signals

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

Upstreams

diversity 50/100

Announces 30 prefixes that RPKI assigns to another network (possible hijack or misconfiguration)
47% of announced prefixes (54 of 114) have no valid ROA, 30 of them RPKI invalid
100% of announced prefixes (114 of 114) have no IRR route object for this ASN

Based on 114 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained

Announced Prefixes

(BGP)114

Prefix	RPKI	IRR	Last Seen
121.49.192.0/24MOAS	Invalid	-	2026-10-27
121.49.195.0/24MOAS	Invalid	-	2026-10-27
121.49.196.0/24MOAS	Invalid	-	2026-10-27
121.49.197.0/24MOAS	Invalid	-	2026-10-27
121.49.198.0/24MOAS	Invalid	-	2026-10-27
121.49.199.0/24MOAS	Invalid	-	2026-10-27
121.49.200.0/21MOAS	No ROA	-	2026-10-27
210.40.0.0/18MOAS	No ROA	-	2026-10-27
210.40.0.0/24MOAS	Invalid	-	2026-10-27
210.40.1.0/24MOAS	Invalid	-	2026-10-27

1-10 of 114

1 / 12

Allocated Prefixes

(RIR)1

Prefix	Country	RIR	Status
2001:250:2c00::/48	🇨🇳 CN	APNIC	assigned

All 114 announced prefixes of AS138381 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS138381 hands its own prefixes to: transit providers, or peers at an exchange.

AS23910China Next Generation Internet CERNET263
AS4538China Education And Research Network Center54

ASPA

No ASPA

Abuse Contact

+86-10-62784301

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
ASPA explainedWhy AS138381 should publish an ASPA object
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/138381

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

curl -s "https://api.ipctl.io/v1/asn/138381" | jq