Autonomous system
AS214757 JAKUB-KRSA
Unclassified RIPE
Summary
Jakub Krsa
hosting research small
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 - Amsterdamfor 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 9 exchanges in 5 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| IX.br (PTT.br) São Paulo | São Paulo, Brazil | 187.16.217.41 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.215.143 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.118.7 |
| The Frys Internet Exchange | Frysian, Netherlands | 2001:7f8:10f::3:46e5:45 |
| NetIX | Sofia, Bulgaria | 185.1.227.44 |
| InterIX Internet Exchange | Amsterdam, Netherlands | 2001:7f8:134::f7 |
| Nine IX | Paris, France | 185.1.14.128 |
| EuroGIX | Strasbourg, France | 185.1.14.128 |
Transit providers
30 upstream, 27 downstream and 80 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 256 addresses IPv6 9 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CZ | Czechia | 10 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS214757- Registry name
- Jakub-Krsa
- Registrant
- JAKUB-KRSA-MNT
- Abuse contact
- abuse@as214757.net
- Registered
- 2024-06-06
- Last changed
- 2026-07-09
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 15 valid, 0 with no ROA
- ROAs
- 6 authorising AS214757
- ASPA
- 14 declared providers
- IRR
- 100% registered · 15 of 15 announcements
- Route objects
- 42 naming AS214757
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 446 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere