AS218375 — CALGANAYGUN-AS Calgan Muharrem Aygun

AS218375 announces 0 IPv4 prefixes covering 0 addresses and 1 IPv6 prefixes.

About this network

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.

Announced prefixes

• 2a0a:87c0:fff7::/48

Upstream networks

• AS212895 Johannes Ernst
• AS34872 Sarah Rossius trading as Servperso Systems
• AS209533 iFog GmbH
• AS20473 The Constant Company, LLC
• AS58057 Securebit AG
• AS37989 DCS1 Pte. Ltd.
• AS401753 BIXCE Inc

Adjacent networks

• AS212895 Johannes Ernst
• AS34872 Sarah Rossius trading as Servperso Systems
• AS209533 iFog GmbH
• AS20473 The Constant Company, LLC
• AS401753 BIXCE Inc
• AS37989 DCS1 Pte. Ltd.
• AS58057 Securebit AG

Routing security

• RPKI: 1 valid, 0 invalid and 0 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 1 route objects.
• Listed in as-sets: AS-EVIX, AS-HURRICANEV6, AS-RETN-ACTUAL-V6, AS-VM-JE-CUS, AS20473:AS-VULTR, AS209533:AS-BGPTUNNEL, AS34872:AS-DOWNSTREAM-NL, AS52025:AS-DOWNSTREAMS-AMSTERDAM, AS52025:AS-DOWNSTREAMS-ASHBURN, AS52025:AS-DOWNSTREAMS-AUCKLAND, AS52025:AS-DOWNSTREAMS-FRANKFURT, AS52025:AS-DOWNSTREAMS-FREMONT, AS52025:AS-DOWNSTREAMS-KANSASCITY, AS52025:AS-DOWNSTREAMS-NEWARK, AS52025:AS-DOWNSTREAMS-SINGAPORE, AS52025:AS-DOWNSTREAMS-STOCKHOLM, AS52025:AS-DOWNSTREAMS-SYDNEY, AS52025:AS-DOWNSTREAMS-TOKYO, AS52025:AS-DOWNSTREAMS-TORONTO.

Internet exchanges

• Local Internet Exchange Netherlands — Meppel, Netherlands