AS199978 — NETCOM Robert Jerzy Opielinski trading as NETCOM COMPUTERS

Network type: residential

AS199978 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

NETCOM is operated by NETCOM Computers, a regional internet service provider based in Kalisz, Poland.

What it's used for

• The address space carries residential broadband traffic, evidenced by reverse DNS entries such as 255.pool-41.szybki-internet.eu and 254.pool-42.szybki-internet.eu, which reference the operator's "szybki-internet" (fast internet) service.
• The AS announces 1536 IPv4 addresses across 2 prefixes (185.155.40.0/22 and 91.231.74.0/23) while maintaining 8 observed neighbours, a ratio consistent with an access network providing last-mile connectivity rather than transit.
• Traffic from this AS consists of subscriber eyeballs accessing the internet via cable or DSL connections in the Kalisz region, as indicated by the operator's classification as a Cable/DSL/ISP.

Notable

• Registrant data for both announced prefixes (PL-NETCOM2-20160607 and PL-NETCOM2) aligns with the AS holder, Robert Jerzy Opielinski trading as NETCOM COMPUTERS.
• The address inventory is compact, consisting of two contiguous blocks in Poland, with no IPv6 prefixes currently announced.

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

Announced prefixes

• 91.231.74.0/23
• 185.155.40.0/22

Upstream networks

• AS62081 Stowarzyszenie e-Poludnie
• AS50607 Stowarzyszenie e-Poludnie
• AS212261 Stowarzyszenie e-Poludnie
• AS201054 Stowarzyszenie e-Poludnie
• AS24482 SG.GS

Downstream networks

• AS52203 "MEDIA-LAB" SERGIUSZ ROZANSKI, JACEK KORZEWSKI

Adjacent networks

• AS62081 Stowarzyszenie e-Poludnie
• AS52203 "MEDIA-LAB" SERGIUSZ ROZANSKI, JACEK KORZEWSKI
• AS50607 Stowarzyszenie e-Poludnie
• AS212261 Stowarzyszenie e-Poludnie
• AS201054 Stowarzyszenie e-Poludnie
• AS24482 SG.GS

Routing security

• RPKI: 2 valid, 1 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 67% of announcements registered; 4 route objects.
• Listed in as-sets: AS-HURRICANE, AS-MULTIMEDIA, AS-NET-COM, AS-NETCOM-COM, AS-NETCOM-PL, AS-SZARANET-TPNET, AS-TRANSROUTE-SPEC, AS21021:AS-MULTIMEDIA-D-CIX, AS21021:AS-MULTIMEDIA-LEVEL3, AS21021:AS-MULTIMEDIA-TPSA-WA-WA, AS5617:AS-PL.