AS38987 — OST-ASN Spoldzielnia Telekomuniacyjna OST

Network type: residential

AS38987 announces 4 IPv4 prefixes covering 12,288 addresses and 1 IPv6 prefixes.

About this network

The AS handle OST-ASN is held by Spoldzielnia Telekomunikacyjna OST.

What it's used for

• The address space carries residential and business subscriber traffic, evidenced by reverse DNS entries for dynamicip.ostnet.pl, staticip.ostnet.pl, and cgnat.ostnet.pl.
• The network announces 12,288 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with 13 observed neighbours, indicating a regional access provider rather than a transit hub.
• Traffic consists of subscriber eyeballs for cable and DSL services, including CGNAT pools for shared public IP access.

Notable

• All registrants for the announced prefixes are OST CORE IP NETWORK ADMINISTRATORS; Spoldzielnia Telekomunikacyjna OST, matching the AS holder.
• The address inventory is subdivided into four distinct IPv4 blocks, with the largest being a /19 and the others /21 or /22, alongside a single /32 IPv6 prefix.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 37.72.120.0/21
• 62.133.128.0/19
• 168.222.232.0/22
• 185.13.184.0/22
• 2a02:22e0::/32

Upstream networks

• AS5617 Orange Polska Spolka Akcyjna
• AS20804 Exatel S.A.
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS20473 The Constant Company, LLC

Downstream networks

• AS31604 Intertele S.A.
• AS200609 CHDE Polska Spolka Akcyjna
• AS31381 Wyzsza Szkola Informatyki i Zarzadzania

Adjacent networks

• AS20804 Exatel S.A.
• AS5617 Orange Polska Spolka Akcyjna
• AS31604 Intertele S.A.
• AS200609 CHDE Polska Spolka Akcyjna
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS31381 Wyzsza Szkola Informatyki i Zarzadzania
• AS20473 The Constant Company, LLC

Internet exchanges

• TPIX - Internet Exchange — Warsaw, Poland
• Equinix Internet Exchange Warsaw — Warsaw, Poland