CERNET2 IX at Tianjin University
Cluster stats
Netblocks52
All fragments 1,448 blocks across 22 clusters
Cluster ID191804030
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 2 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (52)

showing 50 of 52 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
2001:250:401::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:402::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:403::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:404::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:405::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:406::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:407::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:408::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:40d::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:40e::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:250:40f::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a6::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a001::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a002::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a005::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a006::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a007::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a008::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a009::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00a::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00b::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00c::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00d::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00e::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a00f::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a010::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a011::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a012::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a013::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a014::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a015::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a016::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a017::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a018::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a019::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a01a::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a01b::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a01c::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a01e::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a01f::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a020::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a021::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a023::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a024::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a025::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a027::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a028::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a029::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2001:da8:a02a::/48 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high
2403:ac00::/32 CERNET2 IX at Tianjin University BGP ANNOUNCED ● high

Network trust

what's this?
RPKI hygiene: A how networks compare →
98.1% of checked blocks have valid RPKI ROA coverage (51 of 52)
Possible discrepancies (51)

These blocks are registered to CERNET2 IX at Tianjin University but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

240c:c220::/32 /32 authorized for AS4538 — China Education and Research Network Center
240c:c221::/32 /32 authorized for AS4538 — China Education and Research Network Center
2001:250:401::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:402::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:403::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:404::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:405::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:406::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:407::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:408::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:40d::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:40e::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:250:40f::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:da8:a6::/48 /48 authorized for AS4538 — China Education and Research Network Center
2001:da8:a001::/48 /48 authorized for AS4538 — China Education and Research Network Center
+36 more — see the REST API

NIC Handles

AS24352 MAINT-CERNET-AP