Home ASN LookupAS23910

AS23910 CNGI-CERNET2-AS-AP - China Next Generation Internet CERNET2

🇨🇳

Org handle: A91E5D61

China Next Generation Internet CERNET2

APNICallocated

Announced Prefixes (BGP)

44total

1 IPv443 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)256

IPv6 Addresses

Allocated (RIR)3.2×10³²

Announced (BGP)3.2×10³²

Prefix Limit (IPv4)

Prefix Limit (IPv6)

200

Country

🇨🇳 CN

RIR

APNIC

Status

allocated

Allocated

2003-10-14

Routing hygiene

Score 54/100 · High risk

RPKI ROA coverage

4.5%

1 prefix RPKI invalid

IRR route objects

13.6%

37 prefixes registered for another origin

Hijack signals

0 announced against others' ROAs, 2 own announced by others

Upstreams

diversity 21/100

95% of announced prefixes (42 of 44) have no valid ROA, 1 of them RPKI invalid
86% of announced prefixes (38 of 44) have no IRR route object for this ASN
Routes concentrated on one upstream (89% of routes)
2 prefixes of this ASN announced by another network against its ROAs

Based on 44 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained

Announced Prefixes

(BGP)44

Prefix	RPKI	IRR	Last Seen
202.38.120.0/24	No ROA	Other IRR	2026-10-27
2001:250::/32	No ROA	-	2026-10-27
2001:250:fe02::/48	No ROA	-	2026-10-27
2001:250:ff00::/48	No ROA	-	2026-10-27
2001:250:ff01::/48	No ROA	-	2026-10-27
2001:250:ff02::/48	No ROA	-	2026-10-27
2001:250:ff03::/48	No ROA	-	2026-10-27
2001:250:ff04::/48	No ROA	-	2026-10-27
2001:250:ff05::/48	No ROA	-	2026-10-27
2001:250:ff06::/48	No ROA	-	2026-10-27

1-10 of 44

1 / 5

Allocated Prefixes

(RIR)4

Prefix	Country	RIR	Status
2001:250::/32	🇨🇳 CN	APNIC	assigned
2001:251::/32	🇨🇳 CN	APNIC	allocated
2001:da8::/32	🇨🇳 CN	APNIC	allocated
240c:c000::/20	🇨🇳 CN	APNIC	allocated

All 44 announced prefixes of AS23910 →

BGP Neighbours

(seen in AS paths)

Upstreams (3)

Networks AS23910 hands its own prefixes to: transit providers, or peers at an exchange.

AS4538China Education And Research Network Center39
AS23911China Next Generation Internet Beijing IX4
AS4134No.31,Jin Rong Street1

Downstreams (46)

Networks whose own prefixes AS23910 passes on: usually its customers.

AS24357CERNET2 IX At South China University Of Technology229
AS24361CERNET2 IX At Southeast University229
AS24360CERNET2 IX At Zhengzhou University224
AS24363CERNET2 IX At Shandong University224
AS24358CERNET2 IX At Huazhong University Of Science And Technology152
AS24355CERNET2 IX At University Of Electronic Science And Technology Of China137
AS24367CERNET2 IX At Zhejiang University137
AS24362CERNET2 IX At University Of Science And Technology Of China133
AS138182CERNET2 Regional IX At Hebei Normal University126
AS24353CERNET2 IX At Xi'An Jiaotong University113
AS24356CERNET2 IX At Chongqing University101
AS133111CERNET New Technology99
AS24359CERNET2 IX At Central South University97
AS138370CERNET2 Regional IX At Nanchang University85
AS24349CERNET2 IX At Peking University83
AS24372CERNET2 IX At Harbin Institute Of Technology83
AS138393CERNET2 Regional IX At Guangxi University82
AS24364CERNET2 IX At Shanghai Jiaotong University80
AS24371CERNET2 IX At Jilin University76
AS24369CERNET2 IX At Northeast University71
AS138378CERNET2 Regional IX At Yunnan University68
AS24352CERNET2 IX At Tianjin University66
AS138381CERNET2 Regional IX At Guizhou University63
AS24354CERNET2 IX At Lanzhou University61
AS138374CERNET2 Regional IX At Taiyuan University57
AS24348CERNET2 IX At Tsinghua University54
AS138369CERNET2 Regional IX At Shenzhen University50
AS24350CERNET2 IX At Beijing University Of Posts And Telecommunications48
AS24370CERNET2 IX At Dalian University Of Technology46
AS138375CERNET2 Regional IX At Inner Mongolia University45
AS24368CERNET2 IX At Xiamen University43
AS138373CERNET2 Regional IX At Fuzhou University42
AS138371CERNET2 Regional IX At Ocean University Of China37
AS138438CERNET2 Regional IX At Guangxi Normal University35
AS24365CERNET2 IX At Fudan University26
AS138440CERNET2 Regional IX At Hainan Normal University25
AS24366CERNET2 IX At Tongji University22
AS138376CERNET2 Regional IX At Ningxia University22
AS138377CERNET2 Regional IX At Qinghai Normal University18
AS24351CERNET2 IX At Beijing University Of Aeronautics And Astronautics11
AS133512CERNET New Technology11
AS38587CERNET Internet Data Center8
AS133513CERNET New Technology7
AS138442CERNET2 Regional IX At Tibet University5
AS133517CERNET New Technology1
AS133518CERNET New Technology1

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 AS23910 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/23910

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

curl -s "https://api.ipctl.io/v1/asn/23910" | jq