AS16557 — COLOSOLUTIONS

Network type: hosting

AS16557 announces 15 IPv4 prefixes covering 10,752 addresses and 1 IPv6 prefixes.

About this network

Ten thousand addresses, nine upstreams, and not one sampled address returned a name.

What it's used for

• A colocation network. Sixteen IPv4 prefixes and one IPv6 prefix announced from the United States, ten thousand seven hundred and fifty-two addresses, through nine observed BGP neighbours.

Notable

• Half the company's blocks carry its name with no suffix at all; the rest carry it with a zero-padded two. The two groups sit on different address ranges, so the counter marks an era rather than a block.
• Three blocks belong to other companies: an agriculture business under two letters and a number, a network company under its brand with the word for a network and a counter, and a digital services firm under its initials and the registry's word for a block of addresses.
• Eighteen addresses were queried for reverse DNS and none returned a name.
• The country field is missing the small word between the two halves of the country's name.

Interesting

• Nine upstreams on ten thousand addresses is a colocation business buying transit the way its customers ask for it: enough carriers that no single one of them is the answer to an outage.
• Silence across every sampled address in a colocation network is a default rather than an oversight. Names get added per customer, and a customer who never asks never gets one.
• Other companies' blocks announced from this number are tenants who brought their own addresses. The registry records the tenant and the routing records the landlord, and neither field says which is which.

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

Announced prefixes

• 66.103.128.0/20
• 66.103.144.0/21
• 66.103.152.0/23
• 66.103.156.0/23
• 66.103.159.0/24
• 72.21.8.0/23
• 72.21.12.0/23
• 72.21.14.0/24
• 72.21.20.0/24
• 72.21.22.0/24
• 144.208.108.0/24
• 192.160.196.0/24
• 198.252.144.0/24
• 204.152.22.0/23
• 209.126.92.0/24
• 2607:f528::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS33132 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC
• AS6515 DACS-IX

Downstream networks

• AS399765 FasNET Services LLC
• AS22805 CNL Financial Group Inc.
• AS401511 Mullinax Ford
• AS31940 International Telnet Inc.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS33132 Crown Castle Fiber LLC
• AS174 Cogent Communications, LLC
• AS399765 FasNET Services LLC
• AS32083 Omnispring, LLC
• AS6515 DACS-IX
• AS22805 CNL Financial Group Inc.
• AS401511 Mullinax Ford
• AS31940 International Telnet Inc.