Optima telekom
Cluster stats
Netblocks64
All fragments 258 blocks across 57 clusters
Cluster ID192156426
RegistryPEERINGDB
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 5 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
64 0 netblocks since 2026-07-05
2026-07-05 peak 64 2026-07-06

IP Ranges (64)

showing 50 of 64 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
185.1.87.76/32 Optima telekom PEERINGDB ASSIGNED ● high
2001:7f8:28::7:0/128 Optima telekom PEERINGDB ASSIGNED ● high
5.43.160.0/20 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
5.43.176.0/21 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
5.43.184.0/21 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.32.0 – 85.114.37.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.38.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.39.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.40.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.44.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.47.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.48.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.50.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.53.0 – 85.114.53.223 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.55.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.56.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.58.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.59.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
85.114.63.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.128.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.130.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.131.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.132.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.134.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.135.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.136.0/21 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.144.0 – 89.201.154.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.155.0 – 89.201.159.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.162.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.166.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.168.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.169.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.170.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.171.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.175.160/27 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.176.0 – 89.201.189.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.190.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.192.0 – 89.201.219.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.220.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.222.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.224.0/20 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.240.0/24 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
89.201.241.0 – 89.201.255.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.128.0 – 95.178.155.255 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.156.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.158.0/23 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.160.0/20 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.176.0/22 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.180.0/22 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low
95.178.184.0/22 OPTIMA-TELEKOM RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
96.9% of checked blocks have valid RPKI ROA coverage (62 of 64)
Possible discrepancies (60)

These blocks are registered to Optima telekom 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.

95.178.224.0/19 /19 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.192.0 – 89.201.219.255 /19 authorized for AS34594 — Telemach Hrvatska d.o.o.
95.178.128.0 – 95.178.155.255 /19 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.224.0/20 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
95.178.160.0/20 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
5.43.160.0/20 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.241.0 – 89.201.255.255 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
95.178.209.0 – 95.178.223.255 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.176.0 – 89.201.189.255 /20 authorized for AS34594 — Telemach Hrvatska d.o.o.
95.178.192.0 – 95.178.202.255 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.144.0 – 89.201.154.255 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
89.201.136.0/21 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
176.222.40.0/21 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
5.43.176.0/21 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
5.43.184.0/21 /21 authorized for AS34594 — Telemach Hrvatska d.o.o.
+45 more — see the REST API

NIC Handles

AS34594 DUMY-RIPE DUMY-RIPE OT-MNT OT-MNT-lower