AS13113 — ISILINE-AS Via Marconi, 2

Network type: residential

AS13113 announces 10 IPv4 prefixes covering 35,840 addresses and 2 IPv6 prefixes.

About this network

Three reverse-name formats across two domains, one of which concatenates octets with no separator.

What it's used for

• An Italian internet provider. 35,840 addresses across ten IPv4 prefixes, two IPv6 prefixes, and 56 observed BGP neighbours.

Notable

• Sixteen of 18 sampled addresses returned names in three forms: host-0-104-253-87.isiline.org with the octets reversed, network-213-144-72-0.isiline.net with them forwards, and host-79255.isiline.net with two octets run together.
• Two domains are in use, differing only in their top level.
• Netnames are IT-ISILINE dated from 20000228 to 20160331, plus one built from an individual's name.
• The AS handle is ISILINE-AS Via Marconi, 2, a street address.

Interesting

• host-79255 is the interesting failure. Two octets joined without a separator cannot be split back apart reliably: the digits could divide in more than one place, and only knowing the block resolves it. The other two formats in the same record keep their separators and do not have the problem.
• One reversed format and one forward format, under two top-level domains, from one operator. Each was somebody's generator at some point, and the older zones were never migrated.
• A netname carrying a person's name marks space assigned to an individual customer, kept in the public record exactly as it was typed.

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

Announced prefixes

• 5.172.208.0/21
• 5.198.224.0/20
• 37.60.32.0/21
• 45.82.112.0/22
• 87.253.96.0/19
• 93.88.112.0/20
• 109.75.112.0/20
• 185.3.252.0/22
• 185.145.84.0/22
• 213.144.64.0/19
• 2a03:3d80::/29
• 2a0c:8a80::/29

Upstream networks

• AS9002 RETN Limited
• AS12779 IT.Gate S.p.A.
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS37100 SEACOM Limited
• AS3303 Swisscom (Schweiz) AG
• AS57463 NetIX Communications JSC
• AS31543 myNet GmbH
• AS20766 Association "Gitoyen"
• AS59919 Brainbox S.r.l.
• AS34019 Hivane Association
• AS9304 HGC Global Communications Limited

Downstream networks

• AS207132 Balocco s.p.a. Industria Dolciaria

Adjacent networks

• AS9002 RETN Limited
• AS174 Cogent Communications, LLC
• AS12779 IT.Gate S.p.A.
• AS6939 Hurricane Electric LLC
• AS207132 Balocco s.p.a. Industria Dolciaria
• AS34549 meerfarbig GmbH & Co. KG
• AS37721 Virtual Technologies & Solutions
• AS24482 SG.GS
• AS37100 SEACOM Limited
• AS20766 Association "Gitoyen"
• AS59919 Brainbox S.r.l.
• AS3303 Swisscom (Schweiz) AG
• AS57463 NetIX Communications JSC
• AS31543 myNet GmbH
• AS34019 Hivane Association
• AS9304 HGC Global Communications Limited
• AS25091 IP-Max SA

Internet exchanges

• Milan Internet Exchange — Milan, Italy
• France-IX Marseille — Marseille, France
• Torino Piemonte Exchange Point — Torino, Italy
• Milan Neutral Access Point — Milan, Italy
• DE-CIX Marseille — Marseille, France