AS13895 — FIBERCONX

AS13895 announces 2 IPv4 prefixes covering 512 addresses and 2 IPv6 prefixes.

About this network

The two blocks are numbered from zero, which is how programmers count and not how paperwork usually does.

What it's used for

• A Canadian network operator. 512 addresses across two IPv4 prefixes, two IPv6 prefixes, and one observed BGP neighbour.

Notable

• The IPv4 blocks are 199.212.36.0/24 and 199.246.76.0/24, netnames FIBERCONX-BLK1 and FIBERCONX-BLK0.
• Both are registered to Kendall Systems, a different name from the one the AS announces under.
• The IPv6 prefixes are 2001:1978:802::/48 and 2602:fd51::/40, different sizes drawn from ranges that have nothing in common.
• Six addresses were queried for reverse DNS and none returned a name.
• Routing was first seen in 2008.

Interesting

• Counting the first block zero rather than one is a habit carried in from software. It means whoever filled in the registry form thought of the blocks as an array, and it also means the numbering runs out of step with every human-facing document that starts at one.
• Two IPv6 prefixes of different sizes is the shape of a network that took a small allocation from an upstream first and a larger one under its own name later. The wider prefix leaves room the narrow one never had, and both stay announced because renumbering is expensive and leaving them costs nothing.
• One upstream for the whole network makes the AS number a portability tool rather than a redundancy one.

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

Announced prefixes

• 199.212.36.0/24
• 199.246.76.0/24
• 2001:1978:802::/48
• 2602:fd51::/40

Upstream networks

• AS33554 Neutral Data Centers Corp.

Adjacent networks

• AS33554 Neutral Data Centers Corp.

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 75% of announcements registered; 3 route objects.
• Listed in as-sets: AS-FIBERCONX, AS-FIBERCONX, AS-HURRICANEV6, AS-NDCC-CUSTOMERS.

Internet exchanges

• Toronto Internet Exchange — Toronto, Canada