AS15290 — ZAYO-CAN-15290

AS15290 announces 72 IPv4 prefixes covering 20,736 addresses and 20 IPv6 prefixes.

About this network

Ninety-five prefixes, netnames numbered with gaps, and reverse DNS under an acquired carrier.

What it's used for

• A wholesale network carrying its own and its customers' address space. Seventy-five IPv4 prefixes and twenty IPv6 prefixes announced, twenty-one thousand addresses in total, across twenty-seven observed neighbours.

Notable

• Netnames follow one stem with a counter, but the counters seen here skip: seven, nine, fifteen and twenty-five, with one written as ZAYO-CAN--9 using two hyphens where the others use one.
• Two blocks inside the range are registered to a security company rather than the carrier, under a default netname that begins with a leading zero before the address.
• The AS handle ends in this AS number, so the identifier contains itself.
• Three of eighteen sampled addresses answered, all under a different carrier's domain, the name of a company that no longer trades under it.
• One block's registry lookup failed, so nothing can be said about who holds it.

Interesting

• Reverse DNS under a predecessor's domain dates the acquisition better than any registry field. The zone still resolves, the addresses still answer, and renaming them would break nothing except the historical record.
• Customer blocks sitting inside a carrier's numbered series is how wholesale works: the carrier announces the route, the customer holds the registration, and only the netname shows the difference.
• The doubled hyphen is a typing slip that became permanent. Netnames are set once and rarely corrected, so small errors persist for decades.

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

Announced prefixes

• 66.46.26.0/24
• 66.46.46.0/23
• 66.46.102.0/24
• 66.46.194.0/24
• 66.46.196.0/24
• 66.46.221.0/24
• 71.19.171.0/24
• 71.19.174.0/24
• 71.19.189.0/24
• 74.198.31.0/24
• 74.216.111.0/24
• 74.216.178.0/24
• 74.216.210.0/23
• 74.216.234.0/24
• 156.44.121.0/24
• 184.94.3.0/24
• 184.94.7.0/24
• 184.94.15.0/24
• 184.94.22.0/24
• 184.94.27.0/24
• 184.94.36.0/24
• 184.94.51.0/24
• 184.94.119.0/24
• 192.81.85.0/24
• 198.182.214.0/24
• 199.43.108.0/24
• 199.85.193.0/24
• 199.246.159.0/24
• 204.138.208.0/24
• 205.210.150.0/24
• 206.191.67.0/24
• 206.191.79.0/24
• 206.191.80.0/24
• 206.191.87.0/24
• 206.191.93.0/24
• 206.191.96.0/24
• 206.191.120.0/24
• 207.181.66.0/24
• 207.181.106.0/24
• 207.230.251.0/24
• 207.245.25.0/24
• 207.245.45.0/24
• 207.245.215.0/24
• 207.245.222.0/23
• 207.245.229.0/24
• 207.245.244.0/23
• 209.82.28.0/24
• 209.82.31.0/24
• 209.112.4.0/24
• 209.146.153.0/24
• 209.146.166.0/24
• 209.146.169.0/24
• 209.146.181.0/24
• 209.146.198.0/24
• 209.146.220.0/24
• 209.146.234.0/24
• 209.146.237.0/24
• 209.146.238.0/24
• 209.153.205.0/24
• 216.13.4.0/23
• 216.13.69.0/24
• 216.13.80.0/24
• 216.13.120.0/22
• 216.13.127.0/24
• 216.13.131.0/24
• 216.13.233.0/24
• 216.123.71.0/24
• 216.123.176.0/24
• 216.123.187.0/24
• 216.191.118.0/24
• 216.191.234.0/24
• 216.191.252.0/23
• 2001:4c8:1015::/48
• 2001:4c8:101a::/47
• 2001:4c8:101c::/48
• 2001:4c8:101e::/48
• 2001:4c8:1020::/48
• 2001:4c8:1022::/47
• 2001:4c8:1027::/48
• 2001:4c8:102a::/48
• 2001:4c8:1085::/48
• 2001:4c8:1091::/48
• 2001:4c8:1094::/48
• 2001:4c8:1099::/48
• 2001:4c8:109b::/48
• 2001:4c8:109f::/48
• 2001:4c8:10a1::/48
• 2001:4c8:10fd::/48
• 2001:4c8:10fe::/48
• 2001:4c8:1108::/48
• 2001:4c8:1110::/48
• 2607:ca00::/33

Upstream networks

• AS6461 Zayo Bandwidth
• AS577 Bell Canada

Downstream networks

• AS11342 Pathway Communications
• AS6401 Zayo Bandwidth
• AS4470 Citenet Telecom Inc.
• AS32564 Intact Financial Corporation
• AS36698 Fatbanana Broadband Inc.
• AS19005 J2 Global Ventures, LLC
• AS54587 Softek
• AS17025 Zayo Bandwidth
• AS7734 Toronto Dominion Bank
• AS25797 Teranet Inc.
• AS40435 Ligado Networks LLC.
• AS13729 Fidessa Corporation
• AS53747 Wall Street Systems Delaware, Inc
• AS31765 FundSERV Inc.
• AS14875 NovAtel Inc.
• AS15348 Tucows.com Co.
• AS62868 DATA Communications Management Corp.
• AS26567 Loyalty Management Group, Inc.
• AS16941 CenturyLink Communications, LLC
• AS396922 Cisco Systems, Inc.
• AS26035 aeonex
• AS30559 Navtech Systems Support Inc.
• AS399035 Lambton Communications Limited
• AS6461 Zayo Bandwidth

Adjacent networks

• AS6461 Zayo Bandwidth
• AS11342 Pathway Communications
• AS6401 Zayo Bandwidth
• AS4470 Citenet Telecom Inc.
• AS32564 Intact Financial Corporation
• AS36698 Fatbanana Broadband Inc.
• AS19005 J2 Global Ventures, LLC
• AS17025 Zayo Bandwidth
• AS54587 Softek
• AS577 Bell Canada
• AS7734 Toronto Dominion Bank
• AS13729 Fidessa Corporation
• AS40435 Ligado Networks LLC.
• AS25797 Teranet Inc.
• AS53747 Wall Street Systems Delaware, Inc
• AS31765 FundSERV Inc.
• AS14875 NovAtel Inc.
• AS15348 Tucows.com Co.
• AS62868 DATA Communications Management Corp.
• AS26567 Loyalty Management Group, Inc.
• AS16941 CenturyLink Communications, LLC
• AS396922 Cisco Systems, Inc.
• AS26035 aeonex
• AS30559 Navtech Systems Support Inc.
• AS399035 Lambton Communications Limited