AS13371 — DUKE-INTERCHANGE

AS13371 announces 5 IPv4 prefixes covering 151,808 addresses and 2 IPv6 prefixes.

About this network

A hundred and fifty thousand addresses, one neighbour, and nothing in reverse DNS.

What it's used for

• A United States university network. 151,808 addresses across five IPv4 prefixes, one observed BGP neighbour, and two IPv6 prefixes.

Notable

• Two legacy /16s, 152.3.0.0/16 and 152.16.0.0/16, are netnames DUKE-NET and DUKE-NET3.
• 67.159.64.0/18 is DUKE-NET2, so the numbering does not follow the block sizes.
• 152.22.224.0/20 is netname NCREN-DUKE-PARALLEL-IPV4-1, naming a state research network.
• Registrant contacts include an IT security office alongside the usual hostmaster role.
• Fifteen addresses were queried for reverse DNS and none returned a name.

Interesting

• The word PARALLEL in a netname is space set aside for a second path into the same institution. Research networks run traffic that must not share a queue with a campus browsing the web, so the university keeps a separate allocation for the research side and announces it through the state network.
• A security office listed as a registry contact is unusual. Most records name a hostmaster and stop. Putting the abuse and incident side in the public record is a decision to be reachable when something on a hundred and fifty thousand addresses misbehaves.
• One neighbour for a network this size is a campus that reaches the world entirely through its regional research network, which is how higher education has been connected since before commercial transit existed.

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

Announced prefixes

• 67.159.64.0/18
• 152.3.0.0/16
• 152.16.0.0/16
• 152.22.224.0/20
• 198.86.29.0/24
• 2600:2704:100::/48
• 2620:0:690::/47

Upstream networks

• AS81 MCNC

Adjacent networks

• AS81 MCNC