Istanbul
ISTANBUL-NET
Cluster stats
| Netblocks | 16 |
| All fragments | 135 blocks across 47 clusters |
| Cluster ID | 191909214 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 4 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (16)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 161.9.136.0 – 161.9.141.255 | ISTANBUL-NET | RIPE | LEGACY | ● low |
| 161.9.143.0/24 | ISTANBUL-NET | RIPE | LEGACY | ● low |
| 193.140.68.0/23 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.2.0/23 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.4.0/22 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.8.0/21 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.23.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.29.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.34.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 193.255.37.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 194.27.128.0 – 194.27.139.255 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 194.27.143.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 194.27.144.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 194.27.145.0/24 | ISTANBUL-NET | RIPE | ASSIGNED PA | ● low |
| 2001:a98:8020::/48 | ISTANBUL-NET | RIPE | ASSIGNED | ● low |
| 2a0a:8f40:12::/48 | Istanbul | RIPE | ASSIGNED | ● low |
Network trust
what's this?
RPKI hygiene: B
how networks compare →
93.8%
of checked blocks have valid RPKI ROA coverage
(15 of 16)
Possible discrepancies (15)
These blocks are registered to Istanbul 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:a98:8020::/48 /48 | authorized for AS8517 — National Academic Network and Information Center |
| 194.27.128.0 – 194.27.139.255 /20 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.8.0/21 /21 | authorized for AS8517 — National Academic Network and Information Center |
| 161.9.136.0 – 161.9.141.255 /21 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.4.0/22 /22 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.2.0/23 /23 | authorized for AS8517 — National Academic Network and Information Center |
| 193.140.68.0/23 /23 | authorized for AS8517 — National Academic Network and Information Center |
| 194.27.144.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 194.27.145.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 161.9.143.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.34.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.37.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 194.27.143.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.23.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
| 193.255.29.0/24 /24 | authorized for AS8517 — National Academic Network and Information Center |
NIC Handles
DUMY-RIPE
DUMY-RIPE
ULAKNET-MNT
us-fxcapital-1-mnt