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Organization

RETN Limited

IPv4 addresses
34,560
CIDR ranges
31
Category
unknown
BGP prefixes announced
86

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Trust score 65 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About RETN

RETN Networks Limited is a British network service provider headquartered in London, United Kingdom. Founded in 2003, RETN operates a high-capacity backbone network that spans over 142,000 kilometres with more than 1,010 Points of Presence across Europe, Asia, and the United States.

Founded
2002
Headquarters
London
Industry
telecommunications industry
Employees
200

Operates 1 network present at 25 internet exchanges with a selective peering policy.

Countries served by RETN Limited

Every country where this organization has IPv4 allocations, ranked by IPs held.

ASNs owned by RETN Limited

ASNNameIPsPrefixesCountry
AS9002 RETN Limited 25.3K 25 GB
AS28886 RETN Limited 4.1K 1 GB
AS25462 RETN Limited 3.1K 2 GB
AS209447 RETN Limited 1.0K 1 GB
AS210203 RETN Limited 512 1 GB
AS214455 RETN Limited 512 1 GB

Largest CIDR ranges

CIDRIPsPTR DensityASNCountryStateCity
87.245.224.0/19 8.2K
49.6%
AS9002 GB — —
217.28.48.0/20 4.1K
3.6%
AS28886 GB — —
87.245.208.0/21 2.0K
27.6%
AS9002 GB — —
87.245.216.0/21 2.0K
16.9%
AS25462 GB — —
139.45.200.0/21 2.0K
2.6%
AS9002 GB — —
5.253.168.0/22 1.0K
2.6%
AS209447 GB — —
31.128.32.0/22 1.0K
0.1%
AS9002 RU — —
87.245.220.0/22 1.0K
3.6%
AS25462 UA Kyiv City Kyiv
89.19.36.0/22 1.0K
4.5%
AS9002 GB — —
94.158.240.0/22 1.0K
0.6%
AS9002 GB — —
104.121.64.0/22 1.0K
99.1%
AS9002 US — —
139.45.192.0/22 1.0K
3.8%
AS9002 GB — —
139.45.220.0/22 1.0K
0.0%
AS9002 GB — —
149.255.128.0/22 1.0K
3.2%
AS25462 GB — —
185.13.152.0/22 1.0K
0.0%
AS9002 GB — —
193.109.100.0/22 1.0K
1.3%
AS9002 GB — —
87.245.216.0/23 512
9.2%
AS25462 UA Kyiv City Kyiv
104.121.68.0/23 512
99.6%
AS9002 US — —
139.45.196.0/23 512
0.0%
AS9002 GB — —
139.45.198.0/23 512
0.0%
AS210203 GB — —
139.45.206.0/23 512
3.5%
AS9002 LV Riga Riga
139.45.208.0/23 512
0.0%
AS9002 GB — —
139.45.216.0/23 512
0.4%
AS214455 GB — —
139.45.218.0/23 512
3.9%
AS9002 GB — —
149.255.128.0/23 512
2.1%
AS25462 UA Kyiv City Kyiv
185.82.8.0/23 512
0.0%
AS9002 GB England London
193.109.100.0/23 512
1.0%
AS9002 PL Mazovia Warsaw
2.58.98.0/24 256
0.4%
AS9002 LV Riga Riga
23.56.98.0/24 256
99.2%
AS9002 US — —
37.233.86.0/24 256
0.8%
AS9002 RU — —
45.11.94.0/24 256
0.4%
AS9002 RU — —
45.39.107.0/24 256
0.0%
AS9002 US California Santa Clara
45.39.108.0/24 256
0.0%
AS9002 US California Santa Clara
45.137.188.0/24 256
0.4%
AS9002 LV — —
45.145.5.0/24 256
0.4%
AS9002 LV Riga Riga
45.145.163.0/24 256
0.0%
AS9002 LV — —
45.152.86.0/24 256
0.4%
AS9002 LV — —
45.156.20.0/24 256
0.4%
AS9002 LV — —
46.173.20.0/24 256
0.4%
AS9002 RU — —
81.19.134.0/24 256
0.0%
AS9002 RU — —
85.136.179.0/24 256
1.2%
AS9002 FI — —
87.245.210.0/24 256
22.7%
AS9002 GB England London
87.245.212.0/24 256
19.5%
AS9002 PL Mazovia Warsaw
87.245.214.0/24 256
57.0%
AS9002 DE Hesse Frankfurt am Main
87.245.254.0/24 256
5.9%
AS9002 GB — —
87.245.255.0/24 256
13.3%
AS9002 RU — —
104.233.6.0/24 256
0.0%
AS9002 GB — —
139.45.195.0/24 256
0.0%
AS9002 NL — —
139.45.200.0/24 256
0.0%
AS9002 FI Uusimaa Helsinki
139.45.204.0/24 256
3.1%
AS9002 EE Harjumaa Tallinn
139.45.205.0/24 256
3.9%
AS9002 LV Riga Riga
139.45.210.0/24 256
0.8%
AS9002 GB — —
139.45.221.0/24 256
0.0%
AS9002 RU — —
149.255.131.0/24 256
5.9%
AS25462 UA Kyiv City Kyiv
185.82.10.0/24 256
0.4%
AS9002 GB — —
193.109.102.0/24 256
0.0%
AS9002 PL Mazovia Warsaw
213.108.245.0/24 256
0.0%
AS9002 GB — —
87.245.209.0/25 128
5.5%
AS9002 FI Uusimaa Helsinki
87.245.211.128/25 128
46.1%
AS9002 EE Harjumaa Tallinn
87.245.213.0/25 128
14.8%
AS9002 PL Mazovia Warsaw
87.245.218.128/25 128
2.3%
AS25462 DE — —
87.245.219.128/25 128
100.0%
AS25462 UA — —
87.245.237.0/25 128
70.3%
AS9002 UA Kyiv City Kyiv
87.245.245.128/25 128
39.8%
AS9002 PL Mazovia Warsaw
87.245.247.0/25 128
67.2%
AS9002 UA Kyiv City Kyiv
139.45.192.0/25 128
6.3%
AS9002 HU — —
139.45.193.0/25 128
7.0%
AS9002 BG Sofia-Capital Sofia
139.45.201.0/25 128
0.8%
AS9002 SE Stockholm County Stockholm
139.45.202.0/25 128
7.0%
AS9002 LT Kaunas Kaunas
139.45.202.128/25 128
7.0%
AS9002 FI Uusimaa Helsinki
139.45.203.128/25 128
0.0%
AS9002 DE — —
139.45.210.0/25 128
0.8%
AS9002 BG Sofia-Capital Sofia
139.45.219.128/25 128
2.3%
AS9002 GB — —
139.45.220.0/25 128
0.0%
AS9002 KZ — —
139.45.220.128/25 128
0.0%
AS9002 RU — —
139.45.222.128/25 128
0.0%
AS9002 GB — —
139.45.223.128/25 128
0.0%
AS9002 GB — —
149.255.130.128/25 128
3.1%
AS25462 UA Chernihiv Oblast Chernihiv
193.109.103.0/25 128
3.1%
AS9002 PL Mazovia Warsaw
87.245.208.64/26 64
18.8%
AS9002 LV — —
87.245.209.192/26 64
6.3%
AS9002 FI Uusimaa Helsinki
87.245.211.0/26 64
46.9%
AS9002 NL North Holland Amsterdam
87.245.215.0/26 64
37.5%
AS9002 AT Vienna Vienna
87.245.215.128/26 64
37.5%
AS9002 NL North Holland Amsterdam
87.245.219.64/26 64
100.0%
AS25462 UA — —
87.245.226.0/26 64
3.1%
AS9002 NL — —
87.245.229.0/26 64
21.9%
AS9002 NL North Holland Amsterdam
87.245.229.64/26 64
21.9%
AS9002 DE Hesse Frankfurt am Main
87.245.231.192/26 64
57.8%
AS9002 SG — —
87.245.235.0/26 64
23.4%
AS9002 UA — —
87.245.235.128/26 64
23.4%
AS9002 GB — —
87.245.237.192/26 64
70.3%
AS9002 UA Odesa Odesa
87.245.239.0/26 64
43.8%
AS9002 LV Riga Riga
87.245.239.64/26 64
43.8%
AS9002 UA — —
87.245.239.128/26 64
43.8%
AS9002 FR Île-de-France Paris
87.245.239.192/26 64
43.8%
AS9002 UA Zaporizhzhia Zaporizhzhya
87.245.241.64/26 64
57.8%
AS9002 IT — —
87.245.242.0/26 64
70.3%
AS9002 LV Riga Riga
87.245.242.64/26 64
70.3%
AS9002 EE — —
87.245.243.64/26 64
43.8%
AS9002 IT Lombardy Bergamo

Frequently Asked Questions

How many IP addresses does RETN Limited own?

RETN Limited controls 34.6K IPv4 addresses distributed across 31 CIDR ranges. The organization is registered in United Kingdom.

What ASNs does RETN Limited operate?

RETN Limited operates 6 Autonomous Systems. Each ASN represents an independently routed network that RETN Limited manages for internet traffic delivery.

What countries does RETN Limited serve?

RETN Limited has IP address allocations in 14 countries, indicating a multinational network presence for delivering services across these regions.

What type of organization is RETN Limited?

RETN Limited is categorized as unknown. This classification is based on the organization's primary use of its IP address allocations.

Last updated: 2026-11-12 10:09:05 UTC
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