AS16435 — FLUKE-ELECTRONICS

AS16435 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

Nine prefixes that tile one larger block exactly, each step half the size of the one before.

What it's used for

• An instrument maker's network. Nine IPv4 prefixes announced from the United States, no IPv6, sixty-five thousand five hundred and thirty-six addresses, through two observed BGP neighbours.

Notable

• All nine announcements come out of a single parent block, and together they cover it completely with nothing overlapping and nothing left out.
• The sizes descend in a staircase: the first covers half the parent, the next half of what remains, and so on down to two blocks of the smallest routable size sitting side by side.
• Every one of the nine carries the same netname, and every one is registered to the same company.
• That netname puts a given name in front of the brand, which is the company's older style. The holder field uses a newer one, so the record carries two eras of the same business.
• Eighteen addresses were queried for reverse DNS and none returned a name.

Interesting

• A staircase like this is what a routing table looks like when somebody split a block to steer traffic and then never put it back together. Announcing the parent once would carry the same addresses in a single entry; nine entries means nine decisions, each of which made sense at the time.
• Everyone downstream pays for the split. The addresses are one company's, but the cost of describing them is spread across every router that keeps a full table.

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

Announced prefixes

• 129.196.0.0/16

Upstream networks

• AS11404 Wave Broadband
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS11404 Wave Broadband
• AS3356 Level 3 Parent, LLC