AS15148 — BLACKBAUD-ASN

AS15148 announces 2 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

Three company names in one record, and only one of them is the holder's.

What it's used for

• A software company's network. Two IPv4 prefixes announced from the United States, no IPv6, and a single observed BGP neighbour.

Notable

• One block carries the netname WHIPPLEHILL-NET0, an acquired company's name with a counter that starts at zero; the other is BLACKBAUD-BLK-1, the holder's name with a counter that starts at one.
• Both are registered to the holder, so the registry is consistent about ownership and inconsistent about naming.
• Both sampled addresses that answered returned names under a third company's domain, in the form cluster2.convio.net.
• The AS handle appends the object type to the holder's name, making a fourth string.

Interesting

• Two counters starting at different numbers in the same record is a small thing that breaks ordering. One scheme counts from zero and the other from one, so the first block of each is not comparable to the first block of the other.
• The reverse names are the useful part. They name neither the holder nor the netname's company but a third acquisition, which means the machines were never renamed after either purchase. Acquisition history survives in DNS long after the corporate record has been tidied.
• One upstream for a company that hosts other organisations' data is the exposure worth stating plainly.

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

Announced prefixes

• 74.123.152.0/22
• 216.235.194.0/23

Upstream networks

• AS394901 NEW CCH, LLC

Adjacent networks

• AS394901 NEW CCH, LLC