AS15221 STRATUSIQ

Thirty-one prefixes under one netname, and one block registered on another continent's registry.

What it's used for

• A regional internet provider. Thirty-one IPv4 prefixes and one IPv6 prefix announced from the United States, covering twenty-five thousand addresses, with eight observed BGP neighbours.

Notable

• Nearly every block carries the company name as its netname, unchanged and with nothing appended, which is unusually consistent for a network with this many prefixes.
• One block breaks that pattern with a netname naming a fibre product, a three-letter site code, a type word and a counter.
• One block is registered to an unrelated company under a netname ending in the name of a regional internet registry that does not cover the United States, so the space is administered by one registry and announced from another region entirely.
• Eighteen addresses were queried for reverse DNS and none returned a name.
• The prefixes range from /20 down to /24 and cluster in two ranges.

Interesting

• Address space registered in one region and routed in another is legal and increasingly common: the blocks are leased from holders in registries where allocations were made late and generously. It breaks every tool that infers geography from the registry rather than the routing.
• One netname repeated across thirty blocks means the registry cannot tell them apart, and the single block with a descriptive netname shows the operator knows how to write one when it matters.
• Eight upstreams and no reverse names at all: a provider whose public record is its routing.