AS33343 — HCHBNET - U.S. Department of Commerce, HQ and ITA

AS33343 announces 8 IPv4 prefixes covering 65,280 addresses and 1 IPv6 prefixes.

About this network

HCHBNET is operated by the U.S. Department of Commerce, HQ and ITA.

What it's used for

• The address space carries internal government infrastructure, evidenced by the consistent netname ITA-B across all announced IPv4 prefixes.
• The AS announces 65,280 IPv4 addresses and 12 IPv6 prefixes, with only 2 observed neighbours, indicating a self-contained internal network rather than a transit or access provider.

Notable

• All registrants for the largest prefixes are listed as "U.S. Department of Commerce, HQ and ITA", matching the AS holder exactly.
• The address inventory consists of eight IPv4 prefixes within the 170.110.0.0/17 block and ten IPv6 prefixes under 2610:20::/40, reflecting a finely subdivided corporate estate.

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

Announced prefixes

• 170.110.0.0/17
• 170.110.128.0/18
• 170.110.192.0/19
• 170.110.224.0/20
• 170.110.240.0/21
• 170.110.248.0/23
• 170.110.251.0/24
• 170.110.252.0/22
• 2610:20::/37

Upstream networks

• AS13335 Cloudflare, Inc.
• AS3477 National Oceanic and Atmospheric Administration

Adjacent networks

• AS13335 Cloudflare, Inc.
• AS3477 National Oceanic and Atmospheric Administration

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-3477-ALL, AS-TELSTRA-INTL-CUSTOMERS, AS13335:AS-CUSTOMERS.