AS14813 — BB-COLUMBUS

AS14813 announces 105 IPv4 prefixes covering 77,056 addresses and 1 IPv6 prefixes.

About this network

One island's network holding space registered to four different companies, and the one address that answers points at the reverse tree itself.

What it's used for

• A Caribbean ISP. 76,544 addresses across 115 IPv4 prefixes plus one IPv6 prefix, 2600:8400::/28, with four observed BGP neighbours. All 116 announced prefixes are attributed to Barbados.

Notable

• The netnames COL-BB-2 through COL-BB-5 register to the AS holder.
• BDS-NET5 and BDS-NET8 register to Cable & Wireless (Barbados) Limited.
• LVLT-TELEB-5-64-210-40 registers to Tele (Barbados) Inc.
• COGENT-206-228-0 and COGENT-63-160-0 register to Cogent Communications, LLC.
• One of eighteen sampled addresses returned a name, and that name is 254.11.236.23.in-addr.arpa.

Interesting

• A reverse lookup is supposed to return a hostname. This one returns a name inside the reverse tree itself, so asking what 23.236.11.254 is called gets its own reverse address back in a different order. Somebody built the zone from the wrong side of the delegation, and it has answered that way ever since.
• Four registrants on one small island network is the whole history of Caribbean telecoms in one announcement: a local incumbent, a cable operator, an international carrier's block, and the holder's own.
• An IPv6 /28 is a very large allocation next to 76,544 IPv4 addresses. Regional registries hand out IPv6 by expected customer count rather than by current use, so the two numbers describe different decades.

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

Announced prefixes

• 23.236.0.0/20
• 63.170.68.0/23
• 63.175.156.0/22
• 64.210.40.0/21
• 65.48.128.0/22
• 65.48.132.0/23
• 65.48.144.0/24
• 65.48.146.0/23
• 65.48.148.0/22
• 65.48.152.0/24
• 65.48.158.0/23
• 65.48.160.0/21
• 65.48.168.0/23
• 65.48.174.0/24
• 65.48.176.0/21
• 65.48.184.0/22
• 65.48.188.0/24
• 65.48.192.0/23
• 65.48.196.0/22
• 65.48.200.0/23
• 65.48.207.0/24
• 65.48.208.0/22
• 65.48.212.0/24
• 65.48.214.0/24
• 65.48.221.0/24
• 65.48.222.0/24
• 65.48.225.0/24
• 65.48.226.0/23
• 65.48.228.0/24
• 65.48.230.0/23
• 65.48.236.0/22
• 65.48.240.0/24
• 65.48.242.0/23
• 65.48.244.0/22
• 65.48.250.0/23
• 65.48.252.0/22
• 65.166.240.0/21
• 65.172.24.0/22
• 69.73.192.0/23
• 69.73.196.0/23
• 69.73.198.0/24
• 69.73.204.0/22
• 69.73.209.0/24
• 69.73.210.0/23
• 69.73.212.0/23
• 69.73.215.0/24
• 69.73.216.0/21
• 69.73.224.0/22
• 69.73.228.0/23
• 69.73.232.0/22
• 69.73.236.0/24
• 69.73.246.0/23
• 69.73.248.0/23
• 69.73.251.0/24
• 69.73.252.0/22
• 69.80.0.0/24
• 69.80.51.0/24
• 69.80.53.0/24
• 69.80.54.0/24
• 72.22.128.0/21
• 72.22.136.0/23
• 72.22.150.0/23
• 72.51.64.0/24
• 72.51.66.0/23
• 72.51.68.0/23
• 72.51.110.0/23
• 72.51.112.0/22
• 72.51.116.0/24
• 104.153.128.0/21
• 104.200.96.0/20
• 162.220.138.0/24
• 162.220.141.0/24
• 162.246.104.0/21
• 192.214.115.0/24
• 192.235.48.0/20
• 196.1.167.0/24
• 196.1.170.0/24
• 199.38.196.0/23
• 200.50.66.0/24
• 200.50.68.0/23
• 200.50.70.0/24
• 200.50.75.0/24
• 200.50.76.0/24
• 200.50.78.0/23
• 200.50.83.0/24
• 200.50.86.0/23
• 200.50.91.0/24
• 200.50.92.0/22
• 204.16.112.0/24
• 204.212.242.0/23
• 204.212.244.0/23
• 205.214.196.0/24
• 205.214.201.0/24
• 205.214.202.0/24
• 205.214.209.0/24
• 205.214.213.0/24
• 205.214.217.0/24
• 205.217.244.0/24
• 205.244.148.0/22
• 206.231.120.0/21

and 6 more.

Upstream networks

• AS23520 Columbus Networks USA, Inc.

Downstream networks

• AS11139 Cable & Wireless Dominica
• AS55033 University of the West Indies
• AS26634 First Caribbean International Bank Limited

Adjacent networks

• AS23520 Columbus Networks USA, Inc.
• AS11139 Cable & Wireless Dominica
• AS55033 University of the West Indies
• AS26634 First Caribbean International Bank Limited