AS158

AS158 is a legacy ARIN-region Autonomous System Number registered to Ericsson Inc., the US legal entity (6300 Legacy Drive, Plano, TX 75024) of the publicly traded Swedish parent Telefonaktiebolaget LM Ericsson (NASDAQ: ERIC). The RDAP record carries the handle AS158, the AS name ERI-AS, and the registrant org handle ERICSS-5; its registration event dates to 1988-02-05, making it one of the earliest ASNs ever issued (38 years old as of 2026). This is a database artifact from ARIN's records, not an IEEE-sourced date. Despite the "ERI-AS" handle and Ericsson's identity as a telecom-equipment vendor, AS158 is not a commercial ISP or transit provider — BGP tooling classifies it as an enterprise/eyeball network that announces Ericsson's own global corporate address space across R&D, manufacturing, and office sites (Sweden, US, Finland, Australia, India, and several European countries). The network is a stub: it is dual-homed to just two upstreams, AS1299 (Arelion Sweden AB, formerly Telia Carrier) and AS3356 (Lumen / Level 3), and buys transit rather than peering openly — PeeringDB has no entry for AS158 (the /asn/158 path returns 404). It originates roughly 67 IPv4 prefixes (~921,088 addresses) and 14 IPv6 prefixes, with a primary routing presence around Stockholm and Kista, Sweden. Two routing-hygiene flags are worth noting: Hurricane Electric's toolkit reports AS158 announces bogons (reserved/invalid space), and RPKI coverage is minimal (one prefix, 194.237.142.0/24, carries a valid ROA; most rely on unauthenticated IRR objects). No notable public abuse signal was found as of 2026-06-15 — AS158 is not on the Spamhaus ASN-DROP list, and no BGP hijack or route-leak incident is attributed to it.

Operator

Ericsson Inc. (US subsidiary of Telefonaktiebolaget LM Ericsson, Sweden; ARIN org handle ERICSS-5, registrant Ericsson Inc., 6300 Legacy Drive, Plano, TX 75024) [Confirmed] — ARIN RDAP (rdap.arin.net/registry/autnum/158)

Country / RIR

US, ARIN (authoritative RIR per RIPEstat; AS158 in IANA 16-bit block 1–1876, "Assigned by ARIN") [Confirmed]

Allocated

ARIN RDAP registration event 1988-02-05 (database artifact from ARIN records, NOT an IEEE-sourced date); autnum "last changed" 2023-11-29 [Confirmed for the RDAP-shown dates]

Org status

active. Ericsson Inc. is the incorporated US entity of publicly traded Telefonaktiebolaget LM Ericsson (NASDAQ: ERIC); ARIN registration active. A historical "Ericsson Network Systems, Inc." name reflects an earlier legal name around registration [Confirmed for active status; historical-name detail Likely] — whois.arin.net/rest/asn/AS158, ericsson.com

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal as of 2026-06-15; NOT on Spamhaus ASN-DROP (asndrop.txt, 2026-05-29); no NANOG abuse thread or BGP-hijack attribution found; sole routing-layer flag is the HE bogon-announcement tag (possible legacy misconfiguration, not confirmed malice)

Network & routing

Network type

enterprise/stub AS — Ericsson's internal global corporate IP network; classified as eyeball/business network, not a commercial ISP or transit provider [Confirmed] — bgp.tools/as/158, bgp.he.net/AS158

Size

~67 IPv4 prefixes (~921,088 addresses, ~3,598 /24-equivalents) + 14 IPv6 prefixes (~81 prefixes total); avg AS path length 4.060; ranked ~#99 for originated IPv4 space in the US [Confirmed for counts; US rank Likely] — bgp.he.net/AS158, bgp.tools/as/158

Routing/peering

dual-homed to upstreams AS1299 (Arelion Sweden AB) and AS3356 (Lumen / Level 3); only ~3 BGP peers observed total; no public peering policy and no PeeringDB entry (/asn/158 → 404) [Confirmed for upstreams; closed-peering posture Likely] — bgp.he.net/AS158, bgp.tools/as/158

RPKI / hygiene

partial RPKI — 1 valid ROA (194.237.142.0/24), 0 invalid, most prefixes on unauthenticated IRR; bgp.tools tags "Validating RPKI ROV"; bgp.he.net flags AS158 as announcing bogons (specific prefixes dynamically loaded, not retrievable) [Likely] — bgp.he.net/AS158, bgp.tools/as/158

Notable usage

announces Ericsson's own global address space (R&D hubs and offices across Sweden, US, Finland, Australia, India, Denmark, Netherlands, France, UK); primary routing presence in Stockholm / Kista, Sweden; abuse contacts abuse@ericsson.com and lir@ericsson.com [Confirmed] — ARIN RDAP, bgp.tools/as/158

Related ASNs

AS1299 (Arelion Sweden AB) and AS3356 (Level 3 / Lumen) as upstreams [Confirmed]

Analyst note

"ERI-AS" + the vendor name can suggest a carrier, but AS158 is Ericsson's closed corporate/enterprise network buying transit, not an ISP. Conflicting "last updated" values exist (RDAP autnum 2023-11-29 vs a third-party "2012-03-02"); RDAP is treated as authoritative. The 1988 date is an ARIN registry artifact, not IEEE.