AS214757 — Jakub-Krsa Jakub Krsa

AS214757 announces 1 IPv4 prefixes covering 256 addresses and 7 IPv6 prefixes.

About this network

The AS handle JAKUB-KRSA is held by Jakub Krsa.

What it's used for

• The space carries hosting services, indicated by the reverse DNS entries pointing to hosted-by.as214757.net.
• The network announces 256 IPv4 addresses and 9 IPv6 prefixes, with 174 observed neighbours, suggesting a small-scale hosting or research infrastructure rather than a large access network.
• Traffic from this AS consists of web and API endpoints associated with the operator's hosting and research activities.

Notable

• The registrant AS214757 - Amsterdam for the IPv4 prefix aligns with the AS number, confirming consistent ownership.
• The address inventory is compact, consisting of a single /24 IPv4 block and multiple /48 and larger IPv6 prefixes, typical of a small private or research network.

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

Announced prefixes

• 169.128.49.0/24
• 2a05:dfc3:f800::/44
• 2a0a:6044:a1e0::/48
• 2a14:6f44:1000::/42
• 2a14:6f44:1101::/48
• 2a14:6f44:1102::/47
• 2a14:6f44:1104::/46
• 2a14:6f45:b00b::/48

Upstream networks

• AS6939 Hurricane Electric LLC
• AS57463 NetIX Communications JSC
• AS213622 Falcon FZE LLC
• AS34854 Maria Merkel trading as Blahaj Studio
• AS137409 GSL Networks Pty LTD
• AS214762 Sebastian Stefanek trading as MatHost.eu
• AS214331 TESKE VIRTUAL SYSTEM LTDA
• AS49127 Asimo Networks B.V.
• AS6204 INTERKVM HOST SRL
• AS50917 Diederik Focko de Zee
• AS24482 SG.GS
• AS401753 BIXCE Inc
• AS34549 meerfarbig GmbH & Co. KG
• AS25091 IP-Max SA
• AS48185 team.blue NV
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS204092 Association GRIFON
• AS17639 Converge ICT Solutions Inc.
• AS6696 VERIXI SA
• AS50263 A-Systems Sp. z o.o.
• AS208972 GIBIRNET ILETISIM HIZMETLERI SANAYI VE TICARET LIMITED SIRKETI
• AS50673 Serverius Holding B.V.
• AS37721 Virtual Technologies & Solutions
• AS34019 Hivane Association
• AS37100 SEACOM Limited

Downstream networks

• AS209552 Jan Siroky
• AS212470 Oleksandr Kurinnyi
• AS205941 Lungu Stefan Gabriel
• AS205126 Leo Francois Jean-Baptiste Godard
• AS59449 Mitja Herbaj
• AS60900 Adrian Trifonov trading as Ssmidge Technologies
• AS212085 Alexander Bruegmann
• AS210578 Niels Groenewegen trading as NeNet
• AS214762 Sebastian Stefanek trading as MatHost.eu
• AS199183 Arjen Olaf Essink
• AS199518 Gregory Shapiro
• AS215760 Adam Grazioli
• AS211715 Christian Vonderstein
• AS201398 Guwin Universal Services LLC
• AS214161 Rafael Perzaada
• AS219331 Thomas BOUZIN
• AS204871 Shihabudheen P K
• AS211008 Arturs Lihners
• AS218545 jean brozyna
• AS214371 Gijs van de Sande
• AS203062 Alexandre Roux
• AS208471 Ville Ketola Nilsson
• AS218804 Mahmood Althawadi
• AS214205 Cristian Tudor Marcus
• AS213576 Robert Weir

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS49127 Asimo Networks B.V.
• AS205941 Lungu Stefan Gabriel
• AS214762 Sebastian Stefanek trading as MatHost.eu
• AS57463 NetIX Communications JSC
• AS213622 Falcon FZE LLC
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS209552 Jan Siroky
• AS212470 Oleksandr Kurinnyi
• AS205126 Leo Francois Jean-Baptiste Godard
• AS34549 meerfarbig GmbH & Co. KG
• AS59449 Mitja Herbaj
• AS60900 Adrian Trifonov trading as Ssmidge Technologies
• AS212085 Alexander Bruegmann
• AS401753 BIXCE Inc
• AS210578 Niels Groenewegen trading as NeNet
• AS199183 Arjen Olaf Essink
• AS24482 SG.GS
• AS199518 Gregory Shapiro
• AS34854 Maria Merkel trading as Blahaj Studio
• AS137409 GSL Networks Pty LTD
• AS214205 Cristian Tudor Marcus
• AS214331 TESKE VIRTUAL SYSTEM LTDA
• AS17639 Converge ICT Solutions Inc.
• AS204092 Association GRIFON

Routing security

• RPKI: 16 valid, 0 invalid and 0 not-found announcements; 6 ROAs.
• ASPA: 14 authorised providers.
• IRR: 100% of announcements registered; 43 route objects.
• Listed in as-sets: AS-267613, AS-4IXP, AS-4IXP-RS, AS-4IXPV6, AS-BBIX-T, AS-CLOUDIE:AS-KANSAS, AS-CLOUDIE:AS-KANSAS, AS-CYBERVERSE-AUTO, AS-EDAS, AS-EDAS-NEWYORK, AS-HURRICANEV6, AS-HYTRON, AS-HYTRON, AS-HYTRONNETWORK, AS-IIJ, AS-MLGT, AS-MOEDOVE, AS-MOEDOVE, AS-MOEDOVE, AS-MOEDOVE, AS-PACKET, AS-RETN-ACTUAL-V6, AS-SFINNOV, AS-SKYLON, AS-SSMIDGE:AS-CUSTOMERS:AS-FRANKFURT.

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• The Frys Internet Exchange — Frysian, Netherlands
• NetIX — Sofia, Bulgaria
• InterIX Internet Exchange — Amsterdam, Netherlands
• Nine IX — Paris, France
• EuroGIX — Strasbourg, France
• Netnod Sundsvall- Gävle — Sundsvall, Sweden