AS12850 — ASN-ENTER

Network type: residential

AS12850 announces 7 IPv4 prefixes covering 35,840 addresses and 1 IPv6 prefixes.

About this network

Three company names visible at once, 122 neighbours, and addresses written backwards in DNS.

What it's used for

• An Italian business connectivity and data-centre operator. 36,864 addresses across twelve IPv4 prefixes, one IPv6 prefix, and 122 observed BGP neighbours.

Notable

• The largest blocks are 212.29.128.0/19, 212.91.64.0/19, 80.247.64.0/20, 87.248.48.0/20 and 178.239.176.0/20.
• Every netname uses one prefix: IT-IRIDEOS-980527, 20011112, 20050810, 20070115, 20100903 and 20120227.
• The AS handle is ASN-ENTER; the registered holder is Retelit Digital Services S.p.A.
• Eight of eighteen sampled addresses returned names, of the form host-255-143.29-212.enter.it.

Interesting

• Three different company names appear in one record. The AS handle says one thing, the netnames say another, the holder says a third, and the reverse zone uses the domain of the first. Each layer was written during a different ownership, and none of them is wrong.
• The reverse names reverse the address and split it across two labels: 212.29.143.255 becomes host-255-143.29-212. Working backwards matches how reverse DNS itself is structured, so the script that generates these is following the grain of the system rather than human reading order.
• 980527 is a two-digit year from May 1998, sitting in the same holder's list as six four-digit dates. Elsewhere in this range a two-digit and a four-digit netname share the identical day in October 1999, and one holder used four digits consistently from 1989 onward. The two formats ran side by side for over a decade; the choice was the filer's habit, not a rule that changed.
• 122 neighbours on 36,864 addresses is an interconnection business. The addresses serve customers; the peering is the product.

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

Announced prefixes

• 37.139.88.0/21
• 80.247.64.0/20
• 87.248.32.0/19
• 178.239.176.0/20
• 185.48.32.0/22
• 212.29.128.0/19
• 212.91.64.0/19
• 2001:4d38::/32

Upstream networks

• AS3302 Retelit Digital Services S.p.A.
• AS3491 PCCW Global (HK) Ltd.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS37721 Virtual Technologies & Solutions
• AS34019 Hivane Association
• AS24482 SG.GS
• AS50628 Leonix Telecom SAS
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS12859 BIT BV
• AS48185 team.blue NV
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS31027 GlobalConnect A/S
• AS3741 Dimension Data
• AS33891 Core-Backbone GmbH
• AS25091 IP-Max SA

Adjacent networks

• AS3302 Retelit Digital Services S.p.A.
• AS3491 PCCW Global (HK) Ltd.
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS37721 Virtual Technologies & Solutions
• AS34019 Hivane Association
• AS50628 Leonix Telecom SAS
• AS24482 SG.GS
• AS12859 BIT BV
• AS48362 Stadtwerke Feldkirch
• AS48185 team.blue NV
• AS212024 Marc Schmitt
• AS57463 NetIX Communications JSC
• AS3741 Dimension Data
• AS37100 SEACOM Limited
• AS31027 GlobalConnect A/S
• AS20485 Joint Stock Company TransTeleCom
• AS33891 Core-Backbone GmbH
• AS25091 IP-Max SA

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• France-IX Paris — Paris, France
• Equinix Internet Exchange Paris — Paris, France
• DE-CIX Marseille — Marseille, France