AS7734 — TDBANK

AS7734 announces 38 IPv4 prefixes covering 18,688 addresses and 0 IPv6 prefixes.

About this network

Autonomous System 7734 (TDBANK) belongs to the Toronto-Dominion Bank (TD), one of Canada's largest banks and the parent of TD Canada Trust and the US retail arm TD Bank, N.A.

What it's used for

• Carrying TD's own corporate and banking infrastructure: internal enterprise networks, branch and office connectivity, public-facing online and mobile banking front ends, and the datacentre systems behind them.
• Announcing 142.205.0.0/16 — a legacy Class B registered to Toronto-Dominion Bank in 1992 — sliced into a large number of longer prefixes, plus a handful of small blocks from other ranges.

Notable

• This is an enterprise network. Nothing here is sold as connectivity: an address in this space is a TD site, a TD server or a TD security appliance, not a customer of an ISP and not a hosting tenant.
• Reverse DNS is almost entirely absent across the /16, which is typical of a bank: publishing a map of your internal estate in public DNS is an unnecessary disclosure, so financial institutions routinely leave the space dark.
• The unusually fine-grained prefix breakdown (dozens of /23s and /24s carved out of one Class B) is a fingerprint of a large, long-lived corporate network that has been re-segmented many times as the bank grew and merged.

Interesting

• Banks were among the earliest non-academic organisations to take large legacy allocations, and a 1992 Class B still being announced under its original holder's name is now a fairly rare thing.

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

Announced prefixes

• 38.108.217.0/24
• 142.205.0.0/23
• 142.205.2.0/24
• 142.205.9.0/24
• 142.205.10.0/24
• 142.205.13.0/24
• 142.205.18.0/24
• 142.205.25.0/24
• 142.205.63.0/24
• 142.205.65.0/24
• 142.205.92.0/23
• 142.205.94.0/24
• 142.205.104.0/22
• 142.205.108.0/24
• 142.205.112.0/22
• 142.205.116.0/24
• 142.205.118.0/24
• 142.205.120.0/21
• 142.205.129.0/24
• 142.205.130.0/23
• 142.205.143.0/24
• 142.205.144.0/23
• 142.205.152.0/23
• 142.205.156.0/23
• 142.205.158.0/24
• 142.205.160.0/23
• 142.205.168.0/23
• 142.205.174.0/23
• 142.205.180.0/23
• 142.205.202.0/23
• 142.205.206.0/23
• 142.205.208.0/23
• 142.205.216.0/22
• 142.205.232.0/23
• 142.205.240.0/23
• 142.205.248.0/24
• 162.12.220.0/22
• 162.12.236.0/23

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS8220 COLT Technology Services Group Limited
• AS577 Bell Canada
• AS46887 Crown Castle Fiber LLC
• AS15290 Zayo Bandwidth
• AS5400 British Telecommunications Limited
• AS812 Rogers Communications Canada Inc.
• AS21949 Beanfield Technologies Inc.
• AS19752 Hydro One Telecom Inc.
• AS9255 Singapore Telecom

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS8220 COLT Technology Services Group Limited
• AS577 Bell Canada
• AS46887 Crown Castle Fiber LLC
• AS15290 Zayo Bandwidth
• AS5400 British Telecommunications Limited
• AS812 Rogers Communications Canada Inc.
• AS21949 Beanfield Technologies Inc.
• AS9255 Singapore Telecom
• AS19752 Hydro One Telecom Inc.