Nikhef
Cluster stats
| Netblocks | 19 |
| All fragments | 32 blocks across 14 clusters |
| Cluster ID | 191838768 |
| Registry | PEERINGDB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 6 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
19
0 netblocks since 2026-07-05
2026-07-05
peak 19
2026-07-06
IP Ranges (19)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 80.249.209.218/32 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 185.1.160.66/32 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 185.1.160.182/32 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 193.239.118.4/32 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 193.239.118.5/32 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:1::a500:1104:1/128 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:13::a500:1104:1/128 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:13::a500:1104:2/128 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:10f::450:66/128 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 2001:7f8:10f::450:182/128 | Nikhef | PEERINGDB | ASSIGNED | ● high |
| 145.102.132.0/22 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.102.136.0/22 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.107.0.0/22 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.107.4.0/22 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.107.12.0/22 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.110.0.0/16 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.116.48.0/20 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 145.116.208.0/21 | NIKHEF-NET | RIPE | LEGACY | ● low |
| 194.171.96.0/21 | NIKHEF-NET | RIPE | SUB-ALLOCATED PA | ● low |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(19 of 19)
Possible discrepancies (9)
These blocks are registered to Nikhef but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 145.110.0.0/16 /16 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.116.48.0/20 /20 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.116.208.0/21 /21 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 194.171.96.0/21 /21 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.102.132.0/22 /22 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.107.4.0/22 /22 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.102.136.0/22 /22 | authorized for AS1199 — SURF B.V. |
| 145.107.12.0/22 /22 | authorized for AS1104 — Stichting Nederlandse Wetenschappelijk Onderzoek Instituten |
| 145.107.0.0/22 /22 | authorized for AS1103 — SURF B.V. |
NIC Handles
AS1103-MNT
AS1104
DUMY-RIPE
DUMY-RIPE
SN-LIR-MNT
SURF-AUTO-MNT