AS13620 — EMBLEMHEALTH

AS13620 announces 2 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The addresses are still registered to the company that merged away, under a netname built from its initials.

What it's used for

• A health insurer's network. 768 addresses across three IPv4 prefixes, three observed BGP neighbours, and no IPv6 announced.

Notable

• Two blocks are netname GHI-1, registered to a health insurance company that is not the current holder of the AS number.
• All three prefixes are non-adjacent /24s inside 204.76.
• One prefix's registry lookup failed, so nothing is known about its registration here.
• First seen in the routing archive on 2002-03-23, an actual date rather than the archive's start.
• Nine addresses were queried for reverse DNS and none returned a name.

Interesting

• The AS object carries the merged company's brand and the address objects carry the predecessor's. Insurance mergers create a new name for the market and leave the old entities intact underneath for years, and the registry records the underneath.
• Three separate /24s from one range, with gaps, means the space was assigned in three requests rather than one, and the pieces in between went to other organisations. That range holds several unrelated bodies of similar vintage.
• Nothing in the reverse zone answers across all 768 addresses, which for a health insurer is the right instinct. Member portals and claims systems do not benefit from being named.

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

Announced prefixes

• 204.76.167.0/24
• 204.76.169.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS7381 BroadbandONE, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS7381 BroadbandONE, LLC