AS13038 — HELEX-RP Euronext Athens Holding S.A.

AS13038 announces 7 IPv4 prefixes covering 2,304 addresses and 0 IPv6 prefixes.

About this network

A stock exchange with one BGP neighbour, announcing a contiguous block as seven pieces with gaps.

What it's used for

• The network of the Athens stock exchange holding company. 2,304 addresses across seven IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.

Notable

• Every prefix falls inside 193.242.240.0/20, announced as 240.0/24, 243.0/24, 244.0/23, 248.0/24, 251.0/24, 253.0/24 and 254.0/23.
• All seven carry the same netname, HELEX-NET.
• One of eighteen sampled addresses returned a name: marketorder-cs-scan.marketorder.gr.
• First observed in the routing archive in May 2002.

Interesting

• One neighbour is the striking figure. A single upstream means a single path, and if it fails the network is unreachable. That is the arrangement most organisations run an AS number specifically to avoid, and here it belongs to a securities exchange.
• Seven announcements from one /20, with the unannounced pieces left out, is a network routing only what it actually uses. The gaps are space held but not carried in BGP, so the announcement is a map of live segments rather than of the allocation.
• The one hostname that answered names both a business function and a role in the same label. It is a reminder that reverse DNS on enterprise space is descriptive where consumer space is generated, and that description is often more revealing than the operator intends.

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

Announced prefixes

• 193.242.240.0/24
• 193.242.243.0/24
• 193.242.244.0/23
• 193.242.248.0/24
• 193.242.251.0/24
• 193.242.253.0/24
• 193.242.254.0/23

Upstream networks

• AS13335 Cloudflare, Inc.

Adjacent networks

• AS13335 Cloudflare, Inc.

Routing security

• RPKI: 0 valid, 0 invalid and 9 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 2 route objects.
• Listed in as-sets: AS-BTN-CUSTOMERS, AS-FORTHNET, AS-GRIX-ATH, AS-KDDCUSTOMER2, AS-NWN-TRANSIT, AS-TELSTRA-INTL-CUSTOMERS, AS13335:AS-CUSTOMERS, AS19551:AS-IMPERVA, AS3329:AS-HOLTR, AS37271:AS-TEST-CF.

Internet exchanges

• Greek Internet Exchange - Athens — Athens, Greece