AS15606 — NASK-DNS-ANYCAST

AS15606 announces 1 IPv4 prefixes covering 256 addresses and 1 IPv6 prefixes.

About this network

One /24 and one hundred and nineteen neighbours: this is a network announced from many places at once.

What it's used for

• Anycast name service for a national academic network operator. One IPv4 /24 and one IPv6 /48 announced from Poland, two hundred and fifty-six addresses, across one hundred and nineteen observed BGP neighbours.

Notable

• The AS handle, the netname and the holder record all say the same thing: this number exists to carry name service, and the word anycast is written into each of them.
• One hundred and nineteen neighbours behind two hundred and fifty-six addresses is the highest ratio of connections to addresses in this part of the number range.
• The holder is a national research institute, named in full in capitals with no abbreviation.
• The registrant list is that institute and its registry role, with no third party involved.
• Three addresses were queried for reverse DNS and none returned a name.

Interesting

• Anycast works by announcing the same small block from many separate locations, so queries land at whichever copy is nearest. The neighbour count is the footprint: each connection is another place the service answers from.
• A dedicated AS number for one function is good practice for name service. It keeps the announcement independent of the rest of the organisation's routing and makes it obvious when it disappears.
• Two hundred and fifty-six addresses is more than enough. A resolver service needs a handful of addresses and a great many places to put them.

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

Announced prefixes

• 192.195.72.0/24
• 2001:7f9:c::/48

Upstream networks

• AS6939 Hurricane Electric LLC
• AS31229 Beyond.pl sp. z o.o.
• AS1887 PANSTWOWY INSTYTUT BADAWCZY
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS34019 Hivane Association
• AS12779 IT.Gate S.p.A.
• AS17639 Converge ICT Solutions Inc.
• AS20485 Joint Stock Company TransTeleCom
• AS213241 TECHIT.BE SRL
• AS3741 Dimension Data
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS5617 Orange Polska Spolka Akcyjna
• AS37721 Virtual Technologies & Solutions
• AS1836 green.ch AG

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS31229 Beyond.pl sp. z o.o.
• AS1887 PANSTWOWY INSTYTUT BADAWCZY
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS48362 Stadtwerke Feldkirch
• AS48185 team.blue NV
• AS24482 SG.GS
• AS50300 CustodianDC Limited
• AS212024 Marc Schmitt
• AS5617 Orange Polska Spolka Akcyjna
• AS12779 IT.Gate S.p.A.
• AS34019 Hivane Association
• AS17639 Converge ICT Solutions Inc.
• AS57463 NetIX Communications JSC
• AS37721 Virtual Technologies & Solutions
• AS37100 SEACOM Limited
• AS3741 Dimension Data
• AS213241 TECHIT.BE SRL
• AS1836 green.ch AG
• AS20485 Joint Stock Company TransTeleCom

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• TPIX - Internet Exchange — Warsaw, Poland