AS12517 — LAN-WAN-

AS12517 announces 1 IPv4 prefixes covering 1,024 addresses and 1 IPv6 prefixes.

About this network

Twenty IPv6 prefixes against a single IPv4 /22, nine of them doubling in size until they tile a /40.

What it's used for

• Internet access. 1,024 IPv4 addresses in one /22, twenty announced IPv6 prefixes, and one observed BGP neighbour.

Notable

• Nine of the IPv6 announcements step up in size: 2a06:8804::/48, 2a06:8804:1::/48, then /47, /46, /45, /44, /43, /42 and /41, each block twice the one before it.
• Added together those nine cover 2a06:8804::/40 exactly, with nothing left over and nothing overlapping.
• A separate 2a06:8800::/30 sits alongside them, and does not contain the 8804 blocks — a /30 at 8800 reaches only as far as 8803.
• The one IPv4 block is 185.118.252.0/22, netname IL-LAN-WAN-20150925, registered to LAN-WAN I.T LTD.

Interesting

• Nine prefixes to describe one /40 is eight more than the space needs. That staircase is what a range-to-prefix conversion emits when it walks forward from the start doubling as it goes, rather than recognising that the whole range is already a single aligned block.
• The same staircase appears at AS12491, also Israeli, tiling a /38 with ten blocks. Two independent networks producing the identical artefact points at a shared tool or a shared habit rather than a coincidence.
• Twenty IPv6 prefixes against 1,024 IPv4 addresses inverts the usual ratio for a network this size.

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

Announced prefixes

• 185.118.252.0/22
• 2a06:8800::/29

Upstream networks

• AS1680 Cellcom Fixed Line Communication L.P

Adjacent networks

• AS1680 Cellcom Fixed Line Communication L.P