AS203997 — xtdef-eu XTDef Limited

AS203997 announces 8 IPv4 prefixes covering 2,048 addresses and 2 IPv6 prefixes.

About this network

The AS handle XTDEF is held by XTDef Limited.

What it's used for

• The address space carries residential access traffic, evidenced by reverse DNS entries such as DYN-60-64.ADSL.neobee.net and netnames including HGC-Global-Communications-Limited and IPXO.
• The network announces 1792 IPv4 addresses across 7 prefixes and 3 IPv6 prefixes, with 4 observed neighbours, indicating a small-scale access or hosting footprint rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs and dynamic host connections, consistent with the ADSL and dynamic naming conventions in the reverse DNS sample.

Notable

• Registrants are consistent with the announcer, with most prefixes registered to NOC; XTDef Limited or XTDef Limited, and one prefix (164.138.4.0/24) registered to XTDEF-Limited; Abuse contact role object.
• The address inventory is composed of seven distinct /24 blocks, including space previously associated with HGC Global Communications and IPXO, suggesting a consolidated or acquired estate.

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

Announced prefixes

• 81.18.60.0/24
• 89.23.94.0/24
• 141.11.60.0/24
• 151.244.252.0/24
• 164.138.4.0/24
• 178.95.202.0/24
• 179.61.243.0/24
• 191.44.74.0/24
• 2a10:e8c0:43::/48
• 2a10:e8c0:358::/48

Upstream networks

• AS40994 Hohl IT e.U.
• AS20473 The Constant Company, LLC
• AS57695 Misaka Network, Inc.
• AS56662 Marcin Gondek

Adjacent networks

• AS40994 Hohl IT e.U.
• AS20473 The Constant Company, LLC
• AS57695 Misaka Network, Inc.
• AS56662 Marcin Gondek

Routing security

• RPKI: 10 valid, 0 invalid and 0 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 80% of announcements registered; 20 route objects.
• Listed in as-sets: AS-CLOUDIE:AS-FREMONT, AS-CTBC-TOOLS-11, AS-IPXON:AS-CUSTOMERS, AS-MELBICOM, AS-MELBICOM, AS-MISAKA-CUSTOMERS2, AS-ROSTELECOM, AS20473:AS-VULTR, AS23201:AS-TRANSIT, AS40994:AS-CUSTOMERS-AT, AS917:AS-CUSTOMERS, AS917:AS-CUSTOMERS-LARGE.