AS161

AS161 is a low-numbered, long-established Autonomous System Number registered under ARIN to Texas Instruments Incorporated, the Dallas-based multinational semiconductor company (Nasdaq: TXN). It carries the handle TI-AS and functions purely as a corporate enterprise network — Texas Instruments' own internal infrastructure — rather than an ISP or transit provider. The triage point is that AS161 is a dual-homed stub: it originates a small, stable block of legacy address space and relies entirely on two transit upstreams, Lumen / Level 3 (AS3356) and TATA Communications (AS6453), for global reachability. CAIDA records zero customer ASNs in its cone (cone size = 1, itself only), confirming there are no downstreams. As of mid-June 2026 the network announces 13 IPv4 /24 prefixes totaling 3,328 addresses, all ROA-signed and RPKI-valid, with full RIS visibility (327/327 v4 peers). No IPv6 is announced (0/320 v6 RIS peers). One caveat worth flagging: some aggregate databases (e.g. ip2location) cite a much larger ~374,528-address figure, which appears to reflect historical ARIN allocation records rather than the currently routed table; the verified originated count is 3,328. CAIDA's cliqueMember: true flag is likewise a dataset artifact and does not indicate conventional Tier-1 status for a corporate stub. No notable public abuse signal was found as of June 2026: AS161 is absent from Spamhaus ASN-DROP, shows a 0.00% CleanTalk spam rate, and has no documented routing incidents — a clean, corporate-held legacy ASN.

Operator

Texas Instruments Incorporated (handle TI-AS; abuse inet-admin@ti.com, +1-214-567-1220) [Confirmed] — ARIN RDAP / bgp.he.net (https://rdap.arin.net/registry/autnum/161)

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder / ARIN RDAP

Allocated

ARIN ASN RegDate 1988-02-25 (from ARIN RDAP record, not IEEE); last modified 2024-02-09 [Confirmed] — https://rdap.arin.net/registry/autnum/161

Org status

public company (Nasdaq: TXN), Texas Instruments Incorporated; RIR status "ok" per PeeringDB (2026-03-04); ASN active under ARIN [Confirmed] — peeringdb.com / ti.com / ARIN RDAP

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal as of 2026-06-16; absent from Spamhaus ASN-DROP (429 records checked, list dated 2026-05-29); CleanTalk 0.00% spam rate (0 of 8 IPs spam-active); no BGP hijack/leak or NANOG security threads found

Network & routing

Network type

corporate/enterprise stub network; not an ISP or transit provider; no downstream customers [Confirmed] — bgp.tools / CAIDA AS Rank

Size

13 IPv4 prefixes / 3,328 addresses (originated, verified from BGP table); third-party aggregates cite up to ~374,528 covering older historical ARIN allocations — reported as a range; no IPv6 [Confirmed for 3,328; Likely for the larger historical figure] — bgp.he.net / ipinfo.io / ip2location.com (2026-06)

Routing/peering

dual-homed to AS3356 (Lumen/Level 3) and AS6453 (TATA Communications America); CAIDA asnDegree provider=2, customer=0, peer=0; no settlement-free peers; no IXP presence [Confirmed] — bgp.he.net / bgp.tools / CAIDA AS Rank

Peering policy

PeeringDB lists "Open," but no IXP presence, no facility memberships, and no public peering program documented on ti.com — the flag appears to be a default rather than an operational program [Likely] — https://www.peeringdb.com/asn/161

RPKI

all 13 announced IPv4 prefixes are ROA-signed and RPKI-valid; no invalid or not-found states [Confirmed] — bgp.he.net / bgp.tools

Routing history

first seen 192.94.94.0/24 from AS161 on 2000-08-18; last update 198.47.26.0/24 on 2026-06-16; earliest RIPEstat record 2000-08-01 [Confirmed] — RIPEstat routing-status (https://stat.ripe.net/data/routing-status/data.json?resource=161)

AS rank

source-variable — CAIDA AS Rank #23,480; ipinfo reports #25,350 globally / #4,345 in US — reported as a range [Confirmed for CAIDA; Likely for ipinfo] — CAIDA AS Rank / ipinfo.io

Notable usage

internal corporate IT infrastructure for Texas Instruments, a global analog and embedded-processing semiconductor company (HQ Dallas, TX; founded 1930; ~33,000 employees; ~80,000+ products) [Confirmed] — bgp.he.net / ti.com (https://www.ti.com/about-ti/company/ti-at-a-glance.html)

Related ASNs

AS12801 (Texas Instruments Deutschland) and AS399632 reported under TI corporate control [Likely] — netify.ai (https://www.netify.ai/resources/networks/texas-instruments)

Geo footprint

US-only (ARIN-assigned space); CAIDA coordinates lat 32.9316, lon -96.7600 (Dallas, TX area), consistent with TI HQ [Confirmed] — CAIDA AS Rank / bgp.tools

Analyst note

encountered as a clean corporate stub network; WHOIS resolves to Texas Instruments. CAIDA cliqueMember flag and the ~374,528 IP aggregate are dataset artifacts, not current operational facts. Outage history and reputation data: Unknown (no public sources).