RETN Limited

Data as of 2026-08-23
BGP inherited
Cluster stats
Netblocks142 · 52,999 IPv4 addresses
IPv6 31 prefixes (largest 2402:c680::/32)
Registered in Russia (55) · United Kingdom (27) · United States (10) · Hong Kong (9) · Japan (4) · Ireland (2)
All fragments 192 blocks across 21 clusters
Cluster ID226913814
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 36 shared RIR contact/maintainer handles
Registry names 13 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

9 weekly snapshots · JSON
158 +4 netblocks since 2026-07-05
2026-07-05 peak 158 2026-08-23

IP Ranges (142)

showing 50 of 142 — see all⬇ export CSV
CIDR Org name Registry Status Confidence
5.253.168.0/22 RETN Limited BGP ANNOUNCED ● high
27.111.229.103/32 RETN PEERINGDB ASSIGNED ● high
36.255.57.207/32 RETN PEERINGDB ASSIGNED ● high
37.49.236.17/32 RETN PEERINGDB ASSIGNED ● high
43.246.132.0/22 RETN (Hong Kong) Limited APNIC ASSIGNED PORTABLE ● high
43.246.132.0/23 RETN (Hong Kong) Limited BGP ANNOUNCED ● high
43.246.134.0/23 RETN (Hong Kong) Limited BGP ANNOUNCED ● high
43.246.135.0/24 RETN (Hong Kong) Limited BGP ANNOUNCED ● high
80.81.192.73/32 RETN PEERINGDB ASSIGNED ● high
80.249.209.216/32 RETN PEERINGDB ASSIGNED ● high
87.245.216.0/21 RETN Limited BGP ANNOUNCED ● high
91.206.52.143/32 RETN PEERINGDB ASSIGNED ● high
101.203.88.32/32 RETN PEERINGDB ASSIGNED ● high
103.194.236.0/22 RETN (Hong Kong) Limited BGP ANNOUNCED ● high
103.231.152.156/32 RETN PEERINGDB ASSIGNED ● high
139.45.198.0/23 RETN Limited BGP ANNOUNCED ● high
139.45.216.0/23 RETN Limited BGP ANNOUNCED ● high
149.255.128.0/22 RETN Limited BGP ANNOUNCED ● high
163.128.219.0/24 RETN Co., Ltd. BGP ANNOUNCED ● high
185.6.36.117/32 RETN PEERINGDB ASSIGNED ● high
185.79.175.176/32 RETN PEERINGDB ASSIGNED ● high
193.149.1.17/32 RETN PEERINGDB ASSIGNED ● high
193.178.185.64/32 RETN PEERINGDB ASSIGNED ● high
193.188.137.153/32 RETN PEERINGDB ASSIGNED ● high
193.201.28.88/32 RETN PEERINGDB ASSIGNED ● high
193.203.0.150/32 RETN PEERINGDB ASSIGNED ● high
194.53.172.71/32 RETN PEERINGDB ASSIGNED ● high
194.68.123.157/32 RETN PEERINGDB ASSIGNED ● high
194.68.128.157/32 RETN PEERINGDB ASSIGNED ● high
194.88.240.81/32 RETN PEERINGDB ASSIGNED ● high
195.66.224.193/32 RETN PEERINGDB ASSIGNED ● high
198.32.160.182/32 RETN PEERINGDB ASSIGNED ● high
198.32.243.145/32 RETN PEERINGDB ASSIGNED ● high
206.81.80.150/32 RETN PEERINGDB ASSIGNED ● high
210.173.176.139/32 RETN PEERINGDB ASSIGNED ● high
217.28.48.0/20 RETN Limited BGP ANNOUNCED ● high
217.29.66.116/32 RETN PEERINGDB ASSIGNED ● high
2001:504:0:6::9002:1/128 RETN PEERINGDB ASSIGNED ● high
2001:504:1::a500:9002:1/128 RETN PEERINGDB ASSIGNED ● high
2001:504:16::232a/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8::232a:0:1/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:1::a500:9002:1/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:4::232a:1/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:b:100:1d1:a5d0:9002:116/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:d:fe::157/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:d:ff::157/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:f::68/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:f:1::68/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:10::9002/128 RETN PEERINGDB ASSIGNED ● high
2001:7f8:18::117/128 RETN PEERINGDB ASSIGNED ● high

IPv6 ranges (31)

showing the 15 largest allocations

Domains hosted in this network

what's this?

Customer-delegated space

how is this classified?
Unclassified 107 (75.4%)
Operator infrastructure (named) 51 (35.9%)

Network trust

what's this?
RPKI hygiene: B how networks compare →
91.1% of checked blocks have valid RPKI ROA coverage (144 of 158)
Possible discrepancies (3)

These blocks are registered to RETN Limited 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.

45.39.107.0/24 /24 authorized for AS50131 — Spartan Host Ltd
45.39.108.0/24 /24 authorized for AS50131 — Spartan Host Ltd
104.233.6.0/24 /24 authorized for AS207359 — Tochka Network LLC

NIC Handles

APNIC-HM AR1534-AP AR886-AP AS133405 AS134518 AS207359 AS209447 AS210203 AS214455 AS25462 AS28886 AS50131 +24 more