AS13753 — AS-BFG

AS13753 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

Every address answers under a domain named after a different AS number than the one announcing it.

What it's used for

• A fibre provider's network. 256 addresses in the single IPv4 prefix 45.45.169.0/24, the IPv6 block 2602:f6ad::/40, and one observed BGP neighbour.

Notable

• All three sampled addresses answered, as 45-45-169-64.ipv4.sdf.as32030.net and similar.
• The domain in those names is built from an AS number that is not this one.
• The names also carry an address-family label and a three-letter site code between the address and the domain.
• The block is netname BFG-VCI-NET1-V4, which marks the address family a second time.
• The IPv6 allocation is a /40 while the IPv4 announcement is a single /24.

Interesting

• A domain named after an AS number is a naming scheme that works for any customer, and pointing this network's reverse records at someone else's version of it says who actually runs the DNS. A reader tracing an address arrives at a different organisation than the one in the routing table.
• Marking the address family in the netname and again in the hostname is belt and braces from a network that has far more IPv6 than IPv4. The /40 could hold every address in the /24 many times over.
• One upstream and one small block, with an allocation that size waiting behind it, is a network built for what it expects rather than what it currently carries.

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

Announced prefixes

• 45.45.169.0/24

Upstream networks

• AS32030 VoIPster Communications, INC.

Adjacent networks

• AS32030 VoIPster Communications, INC.