AS12204 — SCN-NET

AS12204 announces 3 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

Three blocks registered to a carrier, announced by a research company, with a colo host in the reverse tree.

What it's used for

• Hosting and colocation. 1,024 addresses in three IPv4 prefixes with two observed BGP neighbours and no IPv6 announced.

Notable

• All three blocks are registered to NTT America, Inc., with a second contact reading VIPAR on each.
• The netnames follow the carrier's scheme rather than the customer's: NTTA-205-238 on two blocks and NTTA-204-200 on the third.
• NTTA-204-200 labels 204.203.92.0/24, so the number in the name does not match the block it is on.
• The one address that answered reads amc-colo4.wiley.scnresearch.com.

Interesting

• A netname built from the first two octets stops being accurate the moment the same name gets reused on space from elsewhere, and that has happened here. The label describes where the carrier's numbering started, not where this /24 sits.
• amc-colo4.wiley is a customer's naming convention showing through the carrier's: a numbered colocation host under what reads as a site or client name. Two organisations' bookkeeping meeting on the same address, one in the registry and one in DNS.
• Announcing provider-registered space with your own AS number is the ordinary arrangement for a colocation tenant who wants routing independence without applying for addresses.

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

Announced prefixes

• 204.203.92.0/24
• 205.238.25.0/24
• 205.238.26.0/23

Upstream networks

• AS6939 Hurricane Electric LLC
• AS398335 Helio Broadband, LLC

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS398335 Helio Broadband, LLC

Routing security

• RPKI: 3 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-2044, AS-HURRICANE, AS-TRANSROUTE-SPEC, AS-WAVE-CUSTOMERS, AS12204:AS-ALL, AS398335:AS-ALL.