AS12071 — -Reserved AS-

AS12071 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

An accountancy's /24 where every sampled address is a numbered mail host on a different brand.

What it's used for

• Mail and corporate connectivity. 256 addresses in a single /24 with one observed BGP neighbour and no IPv6 announced.

Notable

• The three sampled addresses answered as mail1-64.bizfastfund.com, mail2-127.ertcwizards.com and mail3-190.nationwidecfos.com.
• The numbering runs across the domains rather than within them: mail1, mail2, mail3 on three separate names.
• Each host name also carries its own last octet.
• The block, 64.94.13.0/24, is netname NCL-216, registered to Nationwide CPAs LLC.

Interesting

• One /24 fronting several finance brands from a single accountancy is a marketing operation rather than an office network. bizfastfund and ertcwizards name financing and tax-credit offers, nationwidecfos names an outsourced finance service, and all three send from the same addresses.
• Numbering mail hosts sequentially across unrelated domains is what you do when the hosts are the thing being counted and the domains are interchangeable. Reputation attaches to addresses, so spreading brands across one block means they share whatever reputation that block has, in both directions.
• NCL-216 follows neither the company name nor the address, which leaves it as somebody's internal reference.

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

Announced prefixes

• 64.94.13.0/24

Upstream networks

• AS29802 HIVELOCITY, Inc.

Adjacent networks

• AS29802 HIVELOCITY, Inc.

Routing security

• RPKI: 1 valid, 0 invalid and 0 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.
• Listed in as-sets: AS-29802-CUSTOMERS, AS-CCF, AS-CCF-TEST, AS-HURRICANE.