AS13429 — MUSC

AS13429 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

One /16 announced as six routes that add up to exactly one /16, to a single upstream.

What it's used for

• A United States medical university and hospital network. 65,536 addresses across six IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.

Notable

• The six prefixes are a /17, a /18, a /19, a /20 and two /21s, all inside 128.23.0.0.
• Their sizes sum to exactly the /16 that contains them.
• All six carry the netname MUSC; five registrant strings omit the word of that the sixth includes.
• All eighteen sampled addresses answered, as 128-23-160-0.musc.edu in form.

Interesting

• Splitting a block into announcements of doubling size is what a tool produces when it covers a range with aligned pieces. Here the range is the whole allocation, so the six routes carry no information the one route would not have carried.
• With a single upstream there is nothing to steer. Deaggregation exists so traffic can prefer different paths, and with one path the six announcements do nothing except occupy six slots in every routing table that accepts them.
• Five records missing a word the sixth has is the same name typed six times. The /17 was registered separately, and whoever filled it in wrote the institution's name in full.

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

Announced prefixes

• 128.23.0.0/16

Upstream networks

• AS2721 CULR, LLC

Adjacent networks

• AS2721 CULR, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 5 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 40% of announcements registered; 6 route objects.
• Listed in as-sets: AS-C-LIGHT-SCLR-TRANSIT, AS-C-LIGHT-TRANSIT, AS-SOX-TRANSIT, AS-SOX-TRANSIT-IPV6, AS-WINDSTREAM-CUST, AS198949:AS-SD, AS2711:AS-CUSTOMERS, AS27563:AS-ALL.