AS133111 CNT-northChina - CERNET New Technology Co., Ltd
🇨🇳Org handle: ORG-CNTC5-AP
CERNET New Technology Co., Ltd
APNICallocated
Announced Prefixes (BGP)
149total
60 IPv489 IPv6
IPv4 Addresses
Allocated (RIR)10,240
Announced (BGP)77,568
IPv6 Addresses
Allocated (RIR)1.6×10³²
Announced (BGP)1.6×10³²
Routing hygiene
Score 62/100 · High riskRPKI ROA coverage
12.1%
72 prefixes RPKI invalid
IRR route objects
61.7%
54 prefixes registered for another origin
Hijack signals
40
6 announced against others' ROAs, 34 own announced by others
Upstreams
3
diversity 49/100
- 88% of announced prefixes (131 of 149) have no valid ROA, 72 of them RPKI invalid
- Announces 6 prefixes that RPKI assigns to another network (possible hijack or misconfiguration)
- 38% of announced prefixes (57 of 149) have no IRR route object for this ASN
- 34 prefixes of this ASN announced by another network against its ROAs
Based on 149 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained
Announced Prefixes
(BGP)149|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| Valid | APNIC | - | |
| No ROA | APNIC | - | |
| No ROA | - | - | |
| No ROA | - | - |
1-10 of 149
1 / 15
Allocated Prefixes
(RIR)25Prefix | Country | RIR | Status |
|---|---|---|---|
| 42.201.32.0/19 | 🇨🇳 CN | APNIC | allocated |
| 103.81.200.0/22 | 🇨🇳 CN | APNIC | allocated |
| 103.226.80.0/22 | 🇨🇳 CN | APNIC | allocated |
| 2400:a980::/29 | 🇨🇳 CN | APNIC | assigned |
| 2400:a980::/32 | 🇨🇳 CN | APNIC | allocated |
| 2400:a980::/40 | 🇨🇳 CN | APNIC | assigned |
| 2400:a980:400::/40 | 🇨🇳 CN | APNIC | assigned |
| 2400:a980:c00::/40 | 🇨🇳 CN | APNIC | assigned |
| 2400:a980:1400::/40 | 🇨🇳 CN | APNIC | assigned |
| 2400:a980:1800::/40 | 🇨🇳 CN | APNIC | assigned |
1-10 of 25
1 / 3
All 149 announced prefixes of AS133111 →
BGP Neighbours
(seen in AS paths)Upstreams (3)
Networks AS133111 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (13)
Networks whose own prefixes AS133111 passes on: usually its customers.
- AS9308Abitcool(China)44
- AS45090Shenzhen Tencent Computer Systems Company Limited35
- AS17442Internet Service Provider In China30
- AS59019Beijing Kingsoft Cloud Internet Technology23
- AS55960Beijing Guanghuan Xinwang Digital7
- AS59078Yunify Technologies5
- AS3793615F,Ideal Plaza No.58 Bei Si Huan Xi Road4
- AS63614A4, 5th Floor, Tower C, Triumph Plaza, Unit A, No 1434
- AS55641Changping District, Beijing3
- AS63727Huawei2
- AS1742821Vianet1
- AS17429BEIJING GEHUA CATV NETWORK1
- AS55990Huawei Cloud Service Data Center1
Transfer History
Registry transfers of AS133111 between organisations.
- AS133111Transfer ·
ASPA
No ASPA
External Links
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 AS133111 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 https://api.ipctl.io/v1/asn/133111Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/133111" | jq