AS21945 — HARLANDCLARKE-AS

AS21945 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

HARLANDCLARKE-AS is operated by Harland Clarke Corp., a provider of secure identity and verification services.

What it's used for

• The address space carries corporate infrastructure, evidenced by netnames ATT-12-190-116-0 and ATT-NET-12-97-128-0 registered to Harland Clarke Corp.
• The AS announces 1536 IPv4 addresses across 2 prefixes with only 2 observed neighbours, indicating a small, self-contained internal corporate estate rather than a transit or access network.

Notable

• Registrants for both announced prefixes match the AS holder, Harland Clarke Corp., confirming consistent ownership of the address space.
• Harland Clarke is part of the Vericast family, a business identity verification company, which aligns with the corporate nature of the network.
• The inventory consists of two distinct IPv4 blocks: 12.190.116.0/22 and 12.97.128.0/23, with no IPv6 prefixes announced.

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

Announced prefixes

• 12.97.128.0/23
• 12.190.116.0/22

Upstream networks

• AS62 CyrusOne LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS62 CyrusOne LLC
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 5 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 5 route objects.
• Listed in as-sets: AS-C1.