AS14661 — LAURENTIANU

AS14661 announces 8 IPv4 prefixes covering 48,896 addresses and 0 IPv6 prefixes.

About this network

A halving chain down one range with two pieces missing, and a /24 from an entirely different block that is the only one filed under the university's full name.

What it's used for

• A university's campus network. 48,896 addresses across eight IPv4 prefixes, with two observed BGP neighbours and no IPv6 announced.

Notable

• Seven prefixes sit inside 142.51: two /18s, a /19, a /20, a /21, a /22 and a /23, all carrying the netname LARU.
• The eighth is 192.26.235.0/24, and it alone carries the netname LAURENTIAN.
• The seven do not cover the range: the top quarter is absent, and so is a /23 in the middle of the lower half.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• The pieces halve neatly and then stop, twice. Whatever occupies the gaps is not announced through this AS, so either it sits behind somebody else's routing or it is simply unused and never advertised. A range that looks contiguous in an allocation record rarely is in the routing table.
• The odd /24 comes from a range unrelated to the rest, and it is the only block whose netname spells the institution out. Blocks acquired separately get filed separately, and the four-letter abbreviation was somebody's later shorthand.
• Two neighbours holding a campus this size. Canadian universities reach the internet through a shared research network, and the second adjacency is what keeps teaching online when the first drops.
• Nothing answers a reverse lookup on any address sampled.

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

Announced prefixes

• 142.51.0.0/18
• 142.51.64.0/22
• 142.51.68.0/23
• 142.51.72.0/21
• 142.51.80.0/20
• 142.51.96.0/19
• 142.51.128.0/18
• 192.26.235.0/24

Upstream networks

• AS26677 ORION

Adjacent networks

• AS26677 ORION