Tan Siewert
Cluster stats
Netblocks16
All fragments 87 blocks across 38 clusters
Cluster ID191665226
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution unresolved
Shared handles clustered on 23 shared RIR contact/maintainer handles
Registry names 8 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

IP Ranges (16)

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CIDR Org name Registry Status Confidence
45.86.126.0/24 Tan Siewert BGP ANNOUNCED ● high
60.191.218.212/30 TAN-JI-DE APNIC ASSIGNED NON-PORTABLE ● high
185.1.155.161/32 Tan Siewert PEERINGDB ASSIGNED ● high
185.1.166.205/32 Tan Siewert PEERINGDB ASSIGNED ● high
193.239.117.196/32 Tan Siewert PEERINGDB ASSIGNED ● high
2001:7f8:13::a521:3392:1/128 Tan Siewert PEERINGDB ASSIGNED ● high
2001:7f8:f2:e1:a5:21:3392:1/128 Tan Siewert PEERINGDB ASSIGNED ● high
2a0c:9a40:8040::/43 Tan Siewert BGP ANNOUNCED ● high
2a0c:b641:701:0:a5:21:3392:1/128 Tan Siewert PEERINGDB ASSIGNED ● high
2a0e:46c3:800::/40 Tan Siewert BGP ANNOUNCED ● high
2a0c:9a40:8040::/43 Tan Siewert RIPE ALLOCATED-BY-LIR ● medium
2a0e:46c3:800::/40 Tan Siewert RIPE ALLOCATED-BY-LIR ● medium
31.47.70.0/24 TAN-IPA1 RIPE ASSIGNED PA ● low
94.125.128.156/31 TAN-CPE1 RIPE ASSIGNED PA ● low
112.91.98.224/30 Tan-wei-qiu APNIC ASSIGNED NON-PORTABLE ● low
116.12.159.96/28 TAN-KIM-SG APNIC ALLOCATED NON-PORTABLE ● low

Network trust

what's this?
RPKI hygiene: B how networks compare →
87.5% of checked blocks have valid RPKI ROA coverage (14 of 16)
Possible discrepancies (1)

These blocks are registered to Tan Siewert 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.

31.47.70.0/24 /24 authorized for AS199486 — Tietokeskus Finland Oy

NIC Handles

AC1602-AP AS2068-AP AS213392 AS213392 CG272-AP CG272-AP CJ54-AP DUMY-RIPE DUMY-RIPE LSEITZ-MNT MAINT-CN-CHINANET-ZJ-JH MAINT-CNCGROUP-GD +11 more