Data as of Nov 11, 2026

167.242.128.0/17

No anonymizer space · no proxy exits in 30 days

Blue Cross Blue Shield of Michigan Mutual Insurance · space held by Blue Cross Blue Shield of Michigan

Announcement

this exact prefix

No RPKI

Announced by

AS30356

Type

Business

>99% of it

Announcements

Less specific

Covering announcements

Prefix	Origin	Type	Proxy exits	Holder	RPKI
167.242.0.0/16 since Feb 2018	AS30356	Business	1	Blue Cross Blue Shield of Michigan

More specific

Announcements inside

Prefix	Origin	Type	Holder	RPKI
167.242.233.0/24 since Oct 2018	AS3356	Unknown	Blue Cross Blue Shield of Michigan

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

32,768 addresses

Type	Addresses	Share	Ranges
Business	32,512	>99%	2
Unknown	256	0.78%	1

Network & registry

Announcement Routing history Whois & abuse

Routing timeline

Covering aggregate above, the prefix's own history below

Summary

Routing history

Pattern: Stable
First seen: May 2015
Current origin since: Aug 2021 · 5.2 yr
Origin networks: 2
Last change of origin: Dec 2017

Recorded history

History

Handoffs: 1