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Autonomous System

AS38987

Spoldzielnia Telekomunikacyjna OST

Announced IPs
12,288
CIDR prefixes
4
ASN
AS38987

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.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-OST

Present at 4 internet exchanges: TPIX PL, RZ-IX, EPIX.Warszawa, EPIX.Katowice

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS38987 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
62.133.128.0/19 42,575 2026-10-14 03:07:25
37.72.120.0/21 42,546 2026-10-14 03:06:22
168.222.232.0/22 40,859 2026-10-14 03:08:57
185.13.184.0/22 40,270 2026-10-14 03:08:57
62.133.140.237/32 432 2026-10-12 13:28:44
62.133.152.129/32 264 2026-09-30 16:12:10
62.133.138.130/32 248 2026-10-13 18:12:25
62.133.129.14/32 209 2026-10-03 21:28:47
185.13.184.221/32 207 2026-10-13 20:08:46
62.133.144.71/32 188 2026-10-13 18:12:25
185.13.185.77/32 174 2026-10-10 10:26:48
185.13.186.225/32 171 2026-09-25 21:55:29
185.13.185.192/32 154 2026-09-18 19:25:52
62.133.135.198/32 152 2026-09-21 17:56:50
185.13.187.211/32 135 2026-10-13 22:42:56
62.133.136.149/32 135 2026-09-10 13:20:17
185.13.184.234/32 132 2026-09-17 17:20:50
185.13.184.87/32 130 2026-09-26 13:33:43
37.72.120.136/32 129 2026-09-27 16:23:35
62.133.132.135/32 125 2026-10-06 14:02:47
185.13.185.38/32 122 2026-09-19 22:59:43
62.133.155.180/32 120 2026-10-10 14:10:14
62.133.150.62/32 115 2026-10-09 19:48:07
185.13.185.238/32 114 2026-09-22 09:50:18
37.72.121.205/32 110 2026-09-20 19:50:05
62.133.136.243/32 108 2026-09-29 20:13:46
62.133.146.17/32 106 2026-09-24 20:04:02
185.13.187.218/32 104 2026-08-21 22:08:03
185.13.185.227/32 101 2026-10-03 20:47:10
185.13.184.45/32 97 2026-09-27 17:57:53
185.13.186.103/32 93 2026-08-17 20:21:04
185.13.185.170/32 93 2026-09-18 18:34:40
62.133.136.32/32 81 2026-07-17 08:44:18
62.133.154.67/32 73 2026-10-12 13:02:58
185.13.185.230/32 67 2026-10-07 19:12:00
62.133.159.14/32 64 2026-10-11 07:47:19
62.133.136.40/32 62 2026-10-11 13:22:47
37.72.125.6/32 60 2026-08-11 10:20:36
185.13.185.156/32 58 2026-08-07 20:50:58
185.13.185.241/32 58 2026-10-08 14:18:45
185.13.185.240/32 57 2026-09-20 11:25:43
62.133.135.220/32 57 2026-08-28 12:09:29
185.13.185.255/32 57 2026-10-11 16:49:15
62.133.136.70/32 57 2026-09-10 14:53:11
185.13.185.53/32 54 2026-10-04 19:18:36
185.13.187.104/32 52 2026-09-29 18:00:25
62.133.148.152/32 50 2026-09-06 10:05:20
185.13.187.241/32 49 2026-10-10 18:11:23
62.133.139.124/32 47 2026-08-17 09:01:19
37.72.124.10/32 46 2026-10-13 19:31:34

Showing top 50 of 239 announced prefixes by sample volume.

Frequently Asked Questions

What is AS38987?

AS38987 is an Autonomous System Number assigned to Spoldzielnia Telekomunikacyjna OST. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS38987 announce?

AS38987 announces 12.3K IPv4 addresses distributed across 4 routed CIDR prefixes. The network is registered in Poland.

Who operates AS38987?

AS38987 is operated by Spoldzielnia Telekomunikacyjna OST. The organization is based in Poland. You can view all IP ranges and related ASNs on the organization page.

What country is AS38987 registered in?

AS38987 is registered in Poland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-10-14 03:09:05 UTC
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