AS43248 — ISPER-ASN ISPER, s.r.o.

AS43248 announces 1 IPv4 prefixes covering 2,048 addresses and 0 IPv6 prefixes.

About this network

ISPER-ASN is operated by ISPER, s.r.o.

What it's used for

• The address space carries residential and business internet access, evidenced by reverse DNS entries such as 0-226-rev.isper.sk and the netname SK-ISPER-20070702.
• The AS announces a single IPv4 prefix, 77.247.224.0/21, comprising 2048 addresses, while maintaining 25 observed routing neighbours.
• As a Slovak internet service provider, the traffic consists of subscriber eyeballs for residential and small business customers connecting to the internet.

Notable

• The RDAP registrant ISPER-SK-ADMINS and netname SK-ISPER-20070702 align directly with the AS holder ISPER, s.r.o.
• The company was formed by the merger of two firms operating in information technology and internet services.
• The inventory consists of a single contiguous /21 block with no announced IPv6 prefixes.

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

Announced prefixes

• 77.247.224.0/21

Upstream networks

• AS39392 SH.cz s.r.o.
• AS29405 VNET a.s.
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS29504 Freenet Liberec, z.s.
• AS37721 Virtual Technologies & Solutions
• AS31230 Slovak University of Technology in Bratislava
• AS24482 SG.GS

Adjacent networks

• AS39392 SH.cz s.r.o.
• AS29405 VNET a.s.
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS29504 Freenet Liberec, z.s.
• AS31230 Slovak University of Technology in Bratislava

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 1 route objects.
• Listed in as-sets: AS-ENERGOTEL_SIX_PEERS, AS-ISPER, AS-KAORA, AS-RETN-ACTUAL-V4, AS-SIXSK-MEMBERS, AS-SIXSTIP-SET, AS-SUPERNETWORK, AS-VNET, AS29405:AS-VNET, AS42000:AS-SIXSK-PEERINGS, AS5578:AS-SIXPEERS.

Internet exchanges

• Peering.cz — Prague, Czech Republic
• Slovak Internet eXchange Bratislava — Bratislava, Slovakia