AS203757 Gregor Czubayko 🇩🇪 DE
Announcing 1 prefixes, seen at the RIS collectors.
IPv4 prefixes
0
-
IPv6 prefixes
1
1 × /48
Upstreams
1
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS203757
- Name
- Gregor Czubayko
- Organisation
- klegul
- Country
- 🇩🇪 DE
- RIR
- RIPENCC
- Allocated
- 2025-11-14
- Network type
- Educational/Research
- Scope
- Not Disclosed
- Peering policy
- Open
- Website
- https://as203757.net
- PeeringDB
- net/40869
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Whois
Fetched from whois.ripe.net
as-block: AS203113 - AS203887 descr: RIPE NCC ASN block remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region. mnt-by: RIPE-NCC-HM-MNT created: 2024-11-12T15:22:00Z last-modified: 2024-11-12T15:22:00Z source: RIPE aut-num: AS203757 as-name: KLEGUL org: ORG-GC363-RIPE sponsoring-org: ORG-IKU2-RIPE import: from AS204680 accept ANY export: to AS204680 announce AS203757 import: from AS41108 accept ANY export: to AS41108 announce AS203757 admin-c: GC27575-RIPE tech-c: GC27575-RIPE status: ASSIGNED mnt-by: RIPE-NCC-END-MNT mnt-by: IMKA-MNT mnt-by: KLEGUL-MNT created: 2025-11-14T16:27:09Z last-modified: 2026-08-11T12:38:59Z source: RIPE organisation: ORG-GC363-RIPE org-name: Gregor Czubayko org-type: OTHER address: Morgenstrasse 55, 76137 Karlsruhe, Baden-Wurttemberg, DE country: DE reg-nr: Not Applicable abuse-c: ACRO62212-RIPE mnt-ref: KLEGUL-MNT mnt-by: KLEGUL-MNT created: 2025-10-29T21:51:05Z last-modified: 2026-07-20T13:49:32Z source: RIPE # Filtered person: Gregor Czubayko address: Morgenstrasse 55, 76137 Karlsruhe, Baden-Wurttemberg, DE phone: +49 721 35490787 nic-hdl: GC27575-RIPE mnt-by: KLEGUL-MNT created: 2025-10-29T21:48:49Z last-modified: 2026-02-28T09:31:12Z source: RIPE