AS13977 — CTELCO

Network type: residential

AS13977 announces 200 IPv4 prefixes covering 505,856 addresses and 2 IPv6 prefixes.

About this network

The IPv6 announcement is a textbook binary decomposition, and the reverse names still carry a retired brand.

What it's used for

• A residential and business broadband network. 492,544 addresses across 263 IPv4 prefixes plus 29 IPv6 prefixes, with 51 observed BGP neighbours.

Notable

• The largest blocks are 70.8.0.0/16, 163.252.0.0/16, 69.53.0.0/17 and 216.212.0.0/18, all under the netname CC-4441 and registered to Fidium.
• The IPv6 space is 2604:6e00::/40, announced alongside a descending ladder of its own sub-blocks: two /48s, then /47, /46, /45, /44, /43, /42 and /41.
• Reverse names take the form 70-8-191-254.mnchnh.fidium.ccidns.net, with a six-character site code ending in a two-letter state abbreviation.
• One sampled address answered to pool-70-105-247-254.port.east.myfairpoint.net instead.
• 72.95.96.0/19 registers to American Registry for Internet Numbers under the netname NET72.

Interesting

• Each of those IPv6 prefixes covers exactly the space the previous ones do not, so together they tile the /40 completely. Announcing a block that way, rather than as one aggregate, means every piece can be steered independently while the whole remains contiguous.
• The site codes name three different states in a sample of six, which is what a regional telephone company that grew by acquisition looks like from the reverse DNS alone.
• One address still answers under an older brand's domain. Renaming a company is easy; renaming every address in half a million is a migration that runs for years, and the stragglers are visible to anyone who queries them.
• The block registering to the registry itself, rather than to a customer, means the lookup landed on a parent allocation instead of an assignment.

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

Announced prefixes

• 64.222.64.0/21
• 64.222.72.0/23
• 64.222.75.0/24
• 64.222.76.0/22
• 64.222.80.0/21
• 64.222.88.0/22
• 64.222.93.0/24
• 64.222.94.0/23
• 64.222.96.0/19
• 64.222.128.0/22
• 64.222.132.0/24
• 64.222.134.0/24
• 64.222.139.0/24
• 64.222.140.0/22
• 64.222.144.0/22
• 64.222.148.0/24
• 64.222.150.0/23
• 64.222.152.0/22
• 64.222.158.0/23
• 64.222.160.0/22
• 64.222.164.0/23
• 64.222.167.0/24
• 64.222.170.0/23
• 64.222.172.0/22
• 64.222.176.0/21
• 64.222.184.0/23
• 64.222.192.0/18
• 64.223.64.0/18
• 64.223.128.0/22
• 64.223.132.0/24
• 64.223.134.0/24
• 64.223.136.0/23
• 64.223.139.0/24
• 64.223.141.0/24
• 64.223.142.0/23
• 64.223.144.0/24
• 64.223.148.0/22
• 64.223.152.0/24
• 64.223.154.0/23
• 64.223.157.0/24
• 64.223.158.0/23
• 64.223.160.0/20
• 64.223.176.0/21
• 64.223.192.0/21
• 64.223.200.0/22
• 64.223.204.0/23
• 64.223.206.0/24
• 64.223.208.0/20
• 64.223.224.0/20
• 64.223.240.0/24
• 64.223.246.0/23
• 64.223.248.0/23
• 64.223.250.0/24
• 64.223.252.0/22
• 66.243.218.0/23
• 67.158.167.0/24
• 68.238.48.0/23
• 68.238.52.0/24
• 68.238.54.0/23
• 68.238.56.0/21
• 69.53.0.0/17
• 70.8.0.0/16
• 70.16.65.0/24
• 70.16.66.0/23
• 70.16.68.0/23
• 70.16.70.0/24
• 70.16.72.0/21
• 70.16.96.0/21
• 70.16.104.0/22
• 70.16.110.0/23
• 70.16.192.0/20
• 70.16.208.0/21
• 70.16.217.0/24
• 70.16.218.0/23
• 70.16.220.0/22
• 70.20.32.0/20
• 70.20.48.0/24
• 70.20.50.0/23
• 70.20.52.0/22
• 70.20.56.0/21
• 70.105.224.0/19
• 70.109.128.0/21
• 70.109.136.0/23
• 70.109.139.0/24
• 70.109.140.0/22
• 70.109.144.0/20
• 70.109.160.0/22
• 70.109.164.0/23
• 70.109.166.0/24
• 70.109.168.0/21
• 70.109.176.0/20
• 71.161.66.0/23
• 71.161.68.0/22
• 71.161.72.0/24
• 71.161.80.0/20
• 71.161.96.0/22
• 71.161.100.0/23
• 71.161.104.0/21
• 71.161.112.0/21
• 71.161.120.0/22

and 102 more.

Upstream networks

• AS6461 Zayo Bandwidth
• AS174 Cogent Communications, LLC
• AS63243 Synergent
• AS33422 New England Telehealth Consortium

Downstream networks

• AS13672 Fidium
• AS32645 Fidium
• AS14671 FairPoint Communications
• AS13673 Fidium
• AS399353 Netafy, Inc.
• AS32508 Granite State Communications
• AS55128 McFarlane Associates LLC
• AS393568 ITT Corporation
• AS14437 C&S WHOLESALE GROCERS INC.
• AS54257 Vermont State Colleges
• AS33555 Stonemarche Network CoOp.
• AS400893 Fiber Connect, LLC.
• AS401455 Clearline Communications, Inc.
• AS400848 DHI TECHNICAL SERVICES LLC
• AS394653 Bar Harbor Bank & Trust
• AS53784 Southern New Hampshire Health System
• AS17152 Bates College
• AS394632 Catholic Medical Center
• AS396437 COMMUNICATIONS LABORATORIES
• AS46925 PAVLOV MEDIA INC
• AS394174 American International Distribution Corporation
• AS40229 MaineHealth Maine Medical Center
• AS22270 Bangor Savings Bank
• AS395001 State of Maine
• AS401340 Hussey Communications Inc

Adjacent networks

• AS6461 Zayo Bandwidth
• AS174 Cogent Communications, LLC
• AS13672 Fidium
• AS32645 Fidium
• AS14671 FairPoint Communications
• AS13673 Fidium
• AS399353 Netafy, Inc.
• AS32508 Granite State Communications
• AS55128 McFarlane Associates LLC
• AS393568 ITT Corporation
• AS14437 C&S WHOLESALE GROCERS INC.
• AS54257 Vermont State Colleges
• AS33555 Stonemarche Network CoOp.
• AS400893 Fiber Connect, LLC.
• AS401455 Clearline Communications, Inc.
• AS400848 DHI TECHNICAL SERVICES LLC
• AS394653 Bar Harbor Bank & Trust
• AS53784 Southern New Hampshire Health System
• AS17152 Bates College
• AS396437 COMMUNICATIONS LABORATORIES
• AS46925 PAVLOV MEDIA INC
• AS394174 American International Distribution Corporation
• AS40229 MaineHealth Maine Medical Center
• AS22270 Bangor Savings Bank
• AS394632 Catholic Medical Center

Internet exchanges

• Boston Internet Exchange — Boston, United States