OHM

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks6
IPv6 2 prefixes (largest 2001:638:a04::/48)
Registered in Netherlands (3) · Croatia (1)
All fragments 13 blocks across 7 clusters
Cluster ID215451600
RegistryRIPE
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 7 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

5 weekly snapshots · JSON
6 0 netblocks since 2026-07-05
2026-07-05 peak 6 2026-07-26

IP Ranges (6)

⬇ export CSV
CIDR Org name Registry Status Confidence
37.218.247.224/28 OHM RIPE ASSIGNED PA ● low
85.114.62.184/29 OHM RIPE ASSIGNED PA ● low
85.146.235.136/30 OHM RIPE ASSIGNED PA ● low
93.117.207.236/30 OHM RIPE ASSIGNED PA ● low
2001:638:a04::/48 OHM-NET RIPE ASSIGNED ● low
2a00:2381:fa63::/48 OHM-LTD RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (2)

CIDR
2001:638:a04::/48
2a00:2381:fa63::/48

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (6 of 6)
Possible discrepancies (1)

These blocks are registered to OHM 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.

2a00:2381:fa63::/48 /48 authorized for AS2856 — British Telecommunications Limited
Routed via provider/NREN (1)

These blocks are cryptographically authorized for this organisation's national research & education network or transit provider — expected topology for an institution that routes through it, not a discrepancy.

2001:638:a04::/48 /48 routed via AS680 — DFN (Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.)

NIC Handles

BTNET-MNT DFN-HM-MNT DUMY-RIPE DUMY-RIPE GREENHOST OT-MNT-lower TNF-MNT