Autonomous system
AS218375 CALGANAYGUN-AS Calgan Muharrem Aygun
Unclassified RIPE
Summary
Calgan Muharrem Aygun
individual developer ipv6
CALGANAYGUN-AS is held by Calgan Muharrem Aygun.
What it's used for
- The space carries a single IPv6 prefix,
2a0a:87c0:fff7::/48, with no IPv4 addresses announced. - The inventory consists of 1 IPv6 prefix against 9 observed neighbours, a ratio indicating a small-scale endpoint or development network rather than a transit or access provider.
- Traffic from this AS consists of web and API endpoints associated with the developer's software projects, including the RateMemo and ZenHabits applications.
Notable
- The registrant name matches the AS handle and the developer identity found in secondary sources.
- The address inventory is minimal, comprising only a single /48 block, which is typical for an individual developer or small-scale personal infrastructure.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Local Internet Exchange Netherlands | Meppel, Netherlands | 185.1.138.42 |
Transit providers
7 upstream, 0 downstream and 7 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 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| PL | Poland | 1 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS218375- Registry name
- CALGANAYGUN-AS
- Registrant
- CALGANAYGUN-MNT
- Abuse contact
- abuse@calgan.dev
- Registered
- 2026-10-16
- Last changed
- 2026-10-19
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 1 authorising AS218375
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS218375
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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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