AS18708 — HDR-CORP

AS18708 announces 2 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.

About this network

The AS handle HDR-CORP is held by HDR, Inc., a global professional services firm specializing in architecture, engineering, and environmental design.

What it's used for

• The address space carries internal corporate traffic, evidenced by netnames such as HDR-CORPORATE and HDR-EMEA-3 associated with registrants like HDR, Inc. and HDR International, Inc.
• The inventory consists of 7 IPv4 prefixes totaling 3072 addresses, with only 3 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.

Notable

• Registrants align with the announcer, including HDR, Inc. for the primary 199.168.240.0/22 block and HDR International, Inc. for the 185.168.252.0/23 block.
• The address inventory is finely subdivided into seven small prefixes, reflecting site-by-site segmentation typical of a large multinational corporation managing distinct regional or functional networks.

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

Announced prefixes

• 185.168.252.0/22
• 199.168.240.0/21

Upstream networks

• AS1828 Unitas Global
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS1828 Unitas Global
• AS3356 Level 3 Parent, LLC
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 6 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 14 route objects.
• Listed in as-sets: AS-UNITAS-CUSTOMERS, AS-XO-B, AS8220:AS-COLTNL.