AS15962 — OSK-DNI Slovakia

AS15962 announces 15 IPv4 prefixes covering 261,120 addresses and 1 IPv6 prefixes.

About this network

One of the twenty-one blocks is registered in another country, to the parent group's registry membership.

What it's used for

• A national mobile and fixed operator. Twenty-one IPv4 prefixes and one IPv6 /28 announced from Slovakia, two hundred and sixty-one thousand one hundred and twenty addresses, across forty-two observed BGP neighbours.

Notable

• Most netnames are a country code, the brand and an eight-digit date, with three blocks sharing the date 20000511.
• One is a country code for a different country entirely, the word for telecommunications, and a date, registered to the group's registry membership rather than to the local company.
• Another drops the day and carries only a year and month, six digits where every other block has eight.
• Seventeen of eighteen queried addresses answered. All but one are the four octets hyphenated, then a label marking the address as changeable or fixed, then the brand's domain.
• The exception is a two-letter host on a customer's own domain, sitting in the middle of a consumer range.
• The IPv6 allocation is a /28, larger than the provider-sized ranges elsewhere in this stretch.

Interesting

• Marking addresses as changeable or fixed in the name itself is a service tier made visible. Mail servers and abuse systems read those labels, so the naming is not documentation, it is policy that other networks act on.
• A parent group's block appearing in a subsidiary's announcement is how multinational carriers move address space without transferring registrations.

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

Announced prefixes

• 5.178.48.0/20
• 78.141.64.0/18
• 85.237.224.0/19
• 90.64.0.0/16
• 92.52.0.0/18
• 92.180.192.0/18
• 95.105.128.0/17
• 109.230.0.0/18
• 178.143.0.0/16
• 185.50.212.0/22
• 193.193.170.0/24
• 194.1.185.0/24
• 195.3.168.0/22
• 195.78.44.0/23
• 213.151.192.0/18
• 2a01:c840::/28

Upstream networks

• AS5617 Orange Polska Spolka Akcyjna
• AS5511 Orange S.A.
• AS5578 SWAN, a.s.
• AS6939 Hurricane Electric LLC
• AS3303 Swisscom (Schweiz) AG
• AS37721 Virtual Technologies & Solutions
• AS29504 Freenet Liberec, z.s.
• AS33891 Core-Backbone GmbH
• AS24482 SG.GS
• AS57463 NetIX Communications JSC

Downstream networks

• AS21433 Accenture UK Limited
• AS50881 ESET, spol. s r.o.
• AS204749 MARTICO s.r.o.
• AS59548 AXASOFT, a.s.
• AS203933 DataCentrum
• AS57566 Wircom s.r.o.
• AS56356 Andrex s.r.o.
• AS209251 GlobalLogic Slovakia s.r.o.
• AS209250 GlobalLogic Slovakia s.r.o.

Adjacent networks

• AS5511 Orange S.A.
• AS5617 Orange Polska Spolka Akcyjna
• AS5578 SWAN, a.s.
• AS6939 Hurricane Electric LLC
• AS21433 Accenture UK Limited
• AS50881 ESET, spol. s r.o.
• AS56356 Andrex s.r.o.
• AS59548 AXASOFT, a.s.
• AS57566 Wircom s.r.o.
• AS203933 DataCentrum
• AS204749 MARTICO s.r.o.
• AS3303 Swisscom (Schweiz) AG
• AS24482 SG.GS
• AS29504 Freenet Liberec, z.s.
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS57463 NetIX Communications JSC
• AS209251 GlobalLogic Slovakia s.r.o.
• AS209250 GlobalLogic Slovakia s.r.o.
• AS50629 LWLcom GmbH

Internet exchanges

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