Univerzita Karlova
Charles University
LEI
31570010000000135022
Registered name
Univerzita Karlova
Jurisdiction
CZ
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks26
All fragments 39 blocks across 4 clusters
Cluster ID191641662
RegistryRIPE
Owner jurisdictionCZ
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Legal identityLEI 31570010000000135022
Shared handles clustered on 5 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
26 0 netblocks since 2026-07-05
2026-07-05 peak 26 2026-07-06

IP Ranges (26)

⬇ export CSV
CIDR Org name Registry Status Confidence
78.128.160.0 – 78.128.207.255 Charles University RIPE ASSIGNED PA ● low
78.128.208.0 – 78.128.209.127 Charles University RIPE ASSIGNED PA ● low
78.128.214.66/31 Charles University RIPE ASSIGNED PA ● low
193.84.53.0/24 Charles University RIPE ASSIGNED PI ● low
193.84.55.0 – 193.84.63.255 Charles University RIPE ASSIGNED PI ● low
195.113.0.0 – 195.113.69.79 Charles University RIPE ASSIGNED PA ● low
195.113.69.80 – 195.113.69.255 Charles University RIPE ASSIGNED PA ● low
195.113.89.0 – 195.113.93.255 Charles University RIPE ASSIGNED PA ● low
195.113.149.132/30 Charles University RIPE ASSIGNED PA ● low
195.113.186.128 – 195.113.186.167 Charles University RIPE ASSIGNED PA ● low
195.113.187.248/30 Charles University RIPE ASSIGNED PA ● low
195.113.187.252/31 Charles University RIPE ASSIGNED PA ● low
195.113.242.224/29 Charles University RIPE ASSIGNED PA ● low
2001:718:0:4::/64 Charles University RIPE ASSIGNED ● low
2001:718:4::/48 Charles University RIPE ASSIGNED ● low
2001:718:18::/48 Charles University RIPE ALLOCATED-BY-LIR ● low
2001:718:18::/64 Charles University RIPE ASSIGNED ● low
2001:718:18:1::/64 Charles University RIPE ASSIGNED ● low
2001:718:18:2::/64 Charles University RIPE ASSIGNED ● low
2001:718:18:80::/64 Charles University RIPE ASSIGNED ● low
2001:718:1e00::/48 Charles University RIPE ALLOCATED-BY-LIR ● low
2001:718:1e00:8300::/56 Charles University RIPE ASSIGNED ● low
2001:718:1e03::/48 Charles University RIPE ASSIGNED ● low
2001:718:2400:1::/64 Charles University RIPE ASSIGNED ● low
2001:718:2400:8001::/64 Charles University RIPE ASSIGNED ● low
2001:718:2401::/48 Charles University RIPE ASSIGNED ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
96.2% of checked blocks have valid RPKI ROA coverage (25 of 26)
Possible discrepancies (11)

These blocks are registered to Charles 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.

2001:718:1e00::/48 /48 authorized for AS2852 — CESNET z.s.p.o.
2001:718:1e03::/48 /48 authorized for AS2852 — CESNET z.s.p.o.
2001:718:4::/48 /48 authorized for AS2852 — CESNET z.s.p.o.
2001:718:2401::/48 /48 authorized for AS2852 — CESNET z.s.p.o.
2001:718:18::/48 /48 authorized for AS2852 — CESNET z.s.p.o.
2001:718:1e00:8300::/56 /56 authorized for AS2852 — CESNET z.s.p.o.
195.113.0.0 – 195.113.69.79 /18 authorized for AS2852 — CESNET z.s.p.o.
78.128.160.0 – 78.128.207.255 /18 authorized for AS2852 — CESNET z.s.p.o.
195.113.89.0 – 195.113.93.255 /22 authorized for AS2852 — CESNET z.s.p.o.
78.128.208.0 – 78.128.209.127 /23 authorized for AS2852 — CESNET z.s.p.o.
193.84.53.0/24 /24 authorized for AS2852 — CESNET z.s.p.o.

NIC Handles

DUMY-RIPE DUMY-RIPE ORG-CUIP2-RIPE RIPE-NCC-END-MNT TENCZ-MNT