AS40444 — ASN-CC

AS40444 announces 3 IPv4 prefixes covering 2,304 addresses and 0 IPv6 prefixes.

About this network

ASN-CC is operated by Constant Contact, Inc.

What it's used for

• The address space carries corporate infrastructure, evidenced by netnames NET-CTCT1, NET-CC1, and CONST-21, all registered to Constant Contact entities.
• The AS announces 2304 IPv4 addresses across 3 prefixes with 5 observed neighbours, indicating a small, self-contained corporate estate rather than a transit or access network.
• Traffic consists of internal corporate endpoints and web/API services for the company's email marketing platform, supporting its business operations and customer-facing applications.

Notable

• Registrants for all announced prefixes align with the announcer, listing Constant Contact, Inc, Constant Contact Operations, and Constant Contact Abuse.
• The address inventory is finely subdivided into three distinct blocks, reflecting site-by-site segmentation typical of an internal corporate network.

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

Announced prefixes

• 205.207.104.0/22
• 208.75.120.0/22
• 216.21.230.0/24

Upstream networks

• AS398427 Markley Network Services, LLC
• AS6461 Zayo Bandwidth
• AS46887 Crown Castle Fiber LLC
• AS33652 Comcast Cable Communications, LLC
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS398427 Markley Network Services, LLC
• AS6461 Zayo Bandwidth
• AS46887 Crown Castle Fiber LLC
• AS33652 Comcast Cable Communications, LLC
• AS3356 Level 3 Parent, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 6 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 8 route objects.
• Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-COMCAST-EDIA, AS-EIGI-SC-CUSTOMERS, AS-MARKLEYNS:AS-MARKLEYNS-LOW, AS-NF-SC-CUSTOMERS, AS-PNAPLAX, AS-SET-BSCCL, AS-XO, AS-XO-B, AS13335:AS-CUSTOMERS, AS198949:AS-SD.