AS8001 — COLOGIX

Network type: hosting

AS8001 announces 99 IPv4 prefixes covering 425,728 addresses and 3 IPv6 prefixes.

About this network

COLOGIX — the network of Cologix, Inc., a North American network-neutral colocation and interconnection company. This particular AS is the former Net Access Corporation (NAC) of Parsippany, New Jersey, which Cologix agreed to acquire in October 2015; the handle changed, the network did not.

What it's used for

• Colocation, dedicated servers and managed hosting out of Cologix's Northern New Jersey facilities, plus IP transit to the tenants in them.
• Interconnection: Cologix runs carrier-neutral meet-me rooms and exchange fabrics, so this AS peers widely rather than serving eyeballs.

Notable

• Every ARIN block behind it is still named NAC-NETBLK and registered to Cologix, Inc., and the reverse DNS that does exist resolves under nac.net — including the deadpan this.ptr.is.named.in.honor.of.arin.nac.net.
• ~55 announced IPv4 prefixes (roughly 430k addresses) with dozens of observed BGP neighbours, plus native IPv6 out of 2001:518::/32. That peer count is the signature of a datacentre and exchange operator, not an access ISP.
• Addresses here are servers. There is no subscriber pool in the inventory: no dsl-, pppoe- or dyn- reverse names anywhere in the space.

Interesting

• The 2001:518::/32 allocation is an early one — NAC was routing production IPv6 well before most US hosting providers offered it.

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

Announced prefixes

• 64.21.0.0/23
• 64.21.3.0/24
• 64.21.4.0/22
• 64.21.8.0/21
• 64.21.16.0/20
• 64.21.32.0/19
• 64.21.64.0/19
• 64.21.96.0/20
• 64.21.112.0/21
• 64.21.120.0/24
• 64.21.122.0/23
• 64.21.124.0/22
• 64.21.128.0/19
• 64.21.160.0/20
• 64.21.176.0/21
• 64.247.0.0/19
• 64.247.32.0/21
• 64.247.40.0/23
• 64.247.43.0/24
• 64.247.44.0/22
• 64.247.48.0/20
• 66.29.0.0/17
• 66.104.102.0/24
• 66.246.0.0/18
• 66.246.64.0/22
• 66.246.68.0/24
• 66.246.70.0/23
• 66.246.72.0/23
• 66.246.74.0/24
• 66.246.76.0/22
• 66.246.80.0/20
• 66.246.96.0/19
• 66.246.128.0/20
• 66.246.144.0/22
• 66.246.148.0/24
• 66.246.150.0/23
• 66.246.152.0/24
• 66.246.154.0/23
• 66.246.156.0/22
• 66.246.160.0/19
• 66.246.192.0/19
• 66.246.224.0/21
• 66.246.233.0/24
• 66.246.234.0/23
• 66.246.236.0/22
• 66.246.240.0/20
• 67.196.0.0/16
• 70.47.0.0/18
• 70.47.64.0/21
• 70.47.72.0/22
• 70.47.80.0/22
• 70.47.88.0/21
• 70.47.96.0/19
• 70.47.128.0/17
• 71.5.34.0/24
• 74.116.192.0/21
• 77.67.101.0/24
• 198.102.78.0/23
• 199.188.170.0/24
• 207.99.0.0/19
• 207.99.32.0/21
• 207.99.40.0/22
• 207.99.45.0/24
• 207.99.46.0/23
• 207.99.48.0/20
• 207.99.64.0/19
• 207.99.96.0/20
• 207.99.112.0/23
• 207.99.115.0/24
• 207.99.116.0/22
• 207.99.120.0/21
• 207.192.64.0/18
• 208.76.6.0/24
• 208.94.172.0/22
• 209.123.0.0/17
• 209.123.128.0/19
• 209.123.160.0/20
• 209.123.176.0/21
• 209.123.184.0/22
• 209.123.188.0/23
• 209.123.192.0/19
• 209.123.224.0/20
• 209.123.240.0/21
• 209.123.248.0/23
• 209.123.251.0/24
• 209.123.252.0/22
• 216.69.192.0/24
• 216.69.194.0/23
• 216.69.201.0/24
• 216.69.206.0/23
• 216.69.212.0/23
• 216.69.219.0/24
• 216.69.223.0/24
• 216.118.64.0/20
• 216.118.80.0/21
• 216.118.89.0/24
• 216.118.90.0/23
• 216.118.92.0/22
• 216.118.96.0/19
• 2001:518::/32

and 2 more.

Upstream networks

• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS9002 RETN Limited
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS2497 Internet Initiative Japan Inc.
• AS20205 Amplex Electric, Inc.
• AS14907 Wikimedia Foundation Inc.
• AS37721 Virtual Technologies & Solutions
• AS13030 Init7 (Switzerland) Ltd.
• AS22652 Videotron Ltee
• AS971 PureVoltage Hosting Inc.
• AS25091 IP-Max SA

Downstream networks

• AS40715 Cologix, Inc
• AS48582 ngena GmbH
• AS396924 Skylands Networks
• AS30418 SumTotal Systems, Inc.
• AS30202 Level IV
• AS33358 AE CORPORATE SERVICES CO
• AS4883 -Reserved AS-
• AS26164 SWK
• AS3599 CDW Technologies LLC
• AS32746 Computer Design & Integration LLC
• AS46472 -Reserved AS-
• AS994 Viirtue LLC
• AS26830 OPERS
• AS63157 DSW Information Technology LLC.
• AS17103 Jensen Research Corporation
• AS55171 MTS Healthcare
• AS18637 Cloudli Communications Corp.
• AS40096 High Point Solutions, Inc.
• AS63077 ConnectMe, LLC.
• AS48254 20i Limited
• AS30138 Artech Information Systems LLC
• AS22345 Solix, Inc.

Adjacent networks

• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC
• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS40715 Cologix, Inc
• AS48582 ngena GmbH
• AS396924 Skylands Networks
• AS9002 RETN Limited
• AS30418 SumTotal Systems, Inc.
• AS30202 Level IV
• AS33358 AE CORPORATE SERVICES CO
• AS4883 -Reserved AS-
• AS24482 SG.GS
• AS2497 Internet Initiative Japan Inc.
• AS26164 SWK
• AS3599 CDW Technologies LLC
• AS994 Viirtue LLC
• AS32746 Computer Design & Integration LLC
• AS46472 -Reserved AS-
• AS26830 OPERS
• AS6939 Hurricane Electric LLC
• AS63157 DSW Information Technology LLC.
• AS17103 Jensen Research Corporation
• AS55171 MTS Healthcare
• AS20205 Amplex Electric, Inc.

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States
• Toronto Internet Exchange — Toronto, Canada
• DE-CIX New York — New York, United States
• New York International Internet Exchange — New York, United States
• DE-CIX Dallas — Dallas, United States
• Equinix Internet Exchange New York — New York, United States
• Digital Realty New York Internet Exchange — New York, United States
• Ohio IX — Columbus, United States