CZ-NORDICTELECOMREGIONAL-20081007
Cluster stats
Netblocks7
All fragments 230 blocks across 35 clusters
Cluster ID192612411
RegistryRIPE
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 3 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (7)

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CIDR Org name Registry Status Confidence
80.90.128.0/27 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.128.32 – 80.90.128.127 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.128.128/25 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.129.0 – 80.90.131.255 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.132.0/24 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.133.0 – 80.90.136.255 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low
80.90.137.0 – 80.90.143.255 CZ-NORDICTELECOMREGIONAL-20081007 RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (7 of 7)
Possible discrepancies (4)

These blocks are registered to CZ-NORDICTELECOMREGIONAL-20081007 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.

80.90.137.0 – 80.90.143.255 /21 authorized for AS42908 — O2 Czech Republic, a.s.
80.90.133.0 – 80.90.136.255 /22 authorized for AS42908 — O2 Czech Republic, a.s.
80.90.129.0 – 80.90.131.255 /22 authorized for AS42908 — O2 Czech Republic, a.s.
80.90.132.0/24 /24 authorized for AS42908 — O2 Czech Republic, a.s.

NIC Handles

DUMY-RIPE DUMY-RIPE mnt-nordictelecom