Duo DNS

BGP inherited
Cluster stats
Netblocks13
All fragments 33 blocks across 15 clusters
Cluster ID204474570
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 20 shared RIR contact/maintainer handles
Registry names 6 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (13)

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CIDR Org name Registry Status Confidence
51.68.162.84/30 Duo DNS RIPE LEGACY ● high
51.89.33.88/30 Duo DNS RIPE LEGACY ● high
64.250.64.0/20 Duo Broadband ARIN ● high
193.109.228.0/24 Duo N.V. RIPE ASSIGNED PI ● high
193.200.29.0/24 Duo N.V. RIPE ASSIGNED PI ● high
80.113.65.152/29 DUO_GTV RIPE ASSIGNED PA ● low
80.113.69.160/27 DUO_GTV RIPE ASSIGNED PA ● low
89.171.85.216/29 DUO-TES RIPE ASSIGNED PA ● low
212.244.65.120/29 DUO-TES RIPE ASSIGNED PA ● low
213.216.109.0/29 DUO-TES RIPE ASSIGNED PA ● low
218.247.227.0 – 218.247.227.95 DUO-YI APNIC ASSIGNED NON-PORTABLE ● low
2001:41f0:d055::/48 DUO_GTV RIPE ASSIGNED ● low
2001:41f0:d06d::/48 DUO_GTV RIPE ASSIGNED ● low

Network trust

what's this?
RPKI hygiene: B how networks compare →
92.3% of checked blocks have valid RPKI ROA coverage (12 of 13)
Possible discrepancies (4)

These blocks are registered to Duo DNS but cryptographically authorized for a different, unrelated network (3 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2001:41f0:d06d::/48 /48 authorized for AS33915 — Vodafone Libertel B.V.
2001:41f0:d055::/48 /48 authorized for AS33915 — Vodafone Libertel B.V.
193.109.228.0/24 /24 authorized for AS34762 — Combell NV
193.200.29.0/24 /24 authorized for AS59943 — Level 27 BVBA

NIC Handles

COMBELL-MNT DCTC1-ARIN DCTC1-ARIN DCTC1-ARIN DCTC1-ARIN DUMY-RIPE DUMY-RIPE DUO-NET-MNT DUOCO MAINT-CNNIC-AP MNT-BELEVEL27 NETIA-MNT +8 more