AS97

AS97 is a low-number legacy ASN whose current registered holder under ARIN is NTT America, Inc., carrying the canonical handle "NTTA-97." The ASN was registered on 1999-12-06 per the ARIN whois ASNumber RegDate field. AS97 is a carrier holding analogous to its neighbor AS93 (NTTA-93, historically FORD-AS). The original 1980s assignee of AS97 was not identified in captured sources and is recorded as unknown, so the current holder should not be assumed to be the original one. An IRR as-set "AS97:AS-INTERNET" (source NTTCOM, maintained under an individual NTT engineering mailbox on the ntt.net domain, not republished here) lists AS97 as its sole member, confirming NTT administration. AS97 is actively routing as of 2026-06-19: RIPEstat routing-status confirms 2 IPv4 prefixes (165.254.163.0/24, 165.254.164.0/24) covering approximately 512 IPv4 addresses, with full visibility across all 327 RIS full-feed peers and 4 observed BGP neighbours. Last-seen timestamp is 2026-06-19. No IPv6 prefixes are announced. This is a small but active footprint, distinct from NTT's active global backbone AS2914 (NTT-DATA-2914, originating ~1,389 IPv4 prefixes). For triage, treat AS97 as an NTT-controlled legacy number with a small live routing presence — not a major routing actor. No notable public abuse signal was found as of June 2026.

Operator

NTT America, Inc. (Confirmed) — ARIN whois (ASNumber record, source ARIN) / Potaroo. Original 1980s assignee unknown — do not assume.

Country / RIR

US, ARIN [Confirmed]

Allocated

1999-12-06 [Confirmed] — ARIN whois ASNumber RegDate field (source ARIN, rdap.arin.net/registry/autnum/97)

Org status

held by NTT America; active routing (small footprint)

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-19 — bgp.tools

Network & routing

Network type

enterprise / telecom (carrier-held legacy) [Confirmed]

Size

active — 2 IPv4 prefixes, ~512 IPs — RIPEstat routing-status (2026-06-19)

Routing/peering

actively announcing 2 IPv4 /24 prefixes (165.254.163.0/24, 165.254.164.0/24); full visibility 327/327 RIS peers; 4 observed BGP neighbours; no IPv6; IRR as-set AS97:AS-INTERNET (source NTTCOM, maintained under an individual NTT engineering mailbox — personal address not republished here); RPKI unknown — stat.ripe.net (2026-06-19)

Notable usage

[current] A low-number legacy ASN held by NTT America as a carrier holding (like sibling AS93/NTTA-93); actively announcing 2 IPv4 /24 prefixes as of 2026-06-19; distinct from NTT's active backbone AS2914 (~1,389 IPv4 prefixes). [historical] Original assignee Unknown — us.ntt.net

Related ASNs

AS2914 (NTT main backbone), AS93 (NTTA-93 — sibling NTT-held legacy number) [Confirmed]

Analyst note

Treat as an NTT-controlled legacy number rather than its original owner; small but active routing presence (2 IPv4 /24s), distinct from AS2914. Sibling pattern with AS93. Allocation date confirmed 1999-12-06 from ARIN ASNumber RegDate.