AS43338 — RATIONAL-AS

AS43338 announces 1 IPv4 prefixes covering 2,048 addresses and 0 IPv6 prefixes.

About this network

The AS handle RATIONAL-AS is held by TSG Interactive Services Limited.

What it's used for

• The address space carries corporate infrastructure, evidenced by the netname RATIONAL-NETWORK and registrant TSG Interactive Services Limited.
• The AS announces 2048 IPv4 addresses within a single prefix (77.87.176.0/21) and maintains 9 observed neighbours.
• This ratio of a single, finely subdivided corporate estate against a moderate number of peers indicates an internal business network rather than a transit or access provider.

Notable

• The registrant TSG Interactive Services Limited aligns with the AS holder, confirming consistent ownership of the announced space.
• The address inventory consists of a single /21 block, representing a compact, self-contained corporate allocation.

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

Announced prefixes

• 77.87.176.0/21

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS2914 NTT America, Inc.
• AS174 Cogent Communications, LLC
• AS3320 Deutsche Telekom AG
• AS3257 GTT Communications Inc.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.

Downstream networks

• AS48536 TSG Interactive Services Limited
• AS44815 TSG INTERACTIVE SERVICES (IRELAND) LIMITED

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS48536 TSG Interactive Services Limited
• AS2914 NTT America, Inc.
• AS44815 TSG INTERACTIVE SERVICES (IRELAND) LIMITED
• AS3320 Deutsche Telekom AG
• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS6762 TELECOM ITALIA SPARKLE S.p.A.

Routing security

• RPKI: 0 valid, 0 invalid and 11 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 73% of announcements registered; 15 route objects.
• Listed in as-sets: AS-GTTCUST, AS-JARMTELCO, AS-KDDCUSTOMER2, AS-OPENTRANSIT, AS-PROLE, AS-RATIONAL-CUS, AS-SEABONECUSTEU, AS-TELSTRA-INTL-CUSTOMERS.

Internet exchanges

• LINX LON1 — London, United Kingdom