AS796

AS796 is a dormant legacy ASN registered to AT&T Services, Inc. under the historical Ameritech block name that announces zero prefixes today. It is registry-active but carries no live routing.

The ASN was never registered individually. ARIN's RDAP autnum object for AS796 is a range record, handle AS795, spanning AS795 through AS797, all three assigned together to AMERITECH-AS. The block's top-level registration event dates to 1990-12-13, with a last-changed event of 2012-04-02; ARIN does not expose a per-ASN sub-date within a range block.

Every routing source checked agrees on complete inactivity: RIPEstat shows 0 announced IPv4 and IPv6 prefixes with 0 of 328 RIS peers seeing it in v4 and 0 of 322 in v6. CAIDA AS Rank places it at 79,459 with seen=false, and its customer cone is a singleton — itself, 0 prefixes, 0 addresses. bgp.he.net and bgp.tools corroborate zero peers and zero hosted domains.

AS796 is outside AT&T's public peering program. The company's published peering policy (corp.att.com/peering) scopes only to AS7018 (US), AS2685 (Canada), AS2686 (EMEA), AS2687 (Asia-Pacific), and AS2688 (Latin America); AS796 is not listed, and PeeringDB has no network record for it. AS7018 — AT&T's actively peered, Selective-policy ASN — is a distinct network and should not be conflated with AS796.

RPKI posture cannot be assessed: with no announced prefixes there are no ROAs to validate. No notable public abuse signal was found as of 2026-08-01, though Spamhaus's own lookup page blocked automated access, leaving that one specific check genuinely unresolved rather than confirmed clean.

Operator

AT&T Services, Inc. (registrant org for ARIN block AS795–AS797, named "AMERITECH-AS"; legacy Ameritech, a Regional Bell Operating Company later absorbed into SBC/AT&T) [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP, RIPEstat

Allocated

1990-12-13 (ARIN RDAP top-level "registration" event for the shared AS795–797 block; ARIN does not expose a per-ASN sub-date within the range); last changed 2012-04-02 [Confirmed] — ARIN RDAP autnum top-level events

Org status

ARIN registry status active (block not revoked/reserved) but operationally dormant — zero routes announced [Confirmed] — ARIN RDAP, bgp.he.net

Contacts

abuse@att.net; RDAP entity records list Indianapolis, IN (registrant / admin-tech POC), Plano, TX (abuse POC), and Middletown, NJ (routing POC) — these are contact-record addresses, not the ASN's operating geography [Confirmed for abuse contact; Likely for POC addresses]

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-01 — not in NANOG archive searches or general abuse-feed queries; Spamhaus check.spamhaus.org blocked automated access (403), so ASN-DROP listing status is Unknown, not confirmed clean [Likely for absence of general signal; Unknown for Spamhaus specifically]

Network & routing

Network type

legacy/dormant ASN; originally issued to Ameritech, registrant of record is now AT&T Services, Inc. following the SBC/AT&T/Ameritech consolidation; announces 0 IPv4/IPv6 prefixes — registry-active but not in production use [Confirmed] — bgp.he.net, ipinfo.io

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / CAIDA AS Rank / bgp.he.net / bgp.tools (2026-08)

Routing/peering

NOT announced — 0 of 328 RIS peers seeing it in v4, 0 of 322 in v6; CAIDA degree total 0 (customer 0, peer 0, provider 0); no PeeringDB net record for AS796; AT&T's published peering policy (corp.att.com/peering) scopes only to AS7018/AS2685/AS2686/AS2687/AS2688 — AS796 is not among them [Confirmed]

RPKI

not assessable — AS796 announces no prefixes, so there are no ROAs to validate [Confirmed] — stat.ripe.net

Notable usage

none found — bgp.he.net and ipinfo.io both show 0 announced prefixes, 0 peers, 0 hosted domains; contrast note: AT&T's primary actively-peered ASN is AS7018 (Selective policy, PeeringDB net 674), a distinct network from AS796 [Confirmed]

Related ASNs

AS795 and AS797 (same ARIN block, AMERITECH-AS); AS7018 (AT&T's actively peered primary ASN — different network, not part of the AS795-797 block) [Confirmed]

Analyst note

shared-block legacy ASN encountered with no AS796-specific operator page; findings rest on ARIN RDAP, RIPEstat, CAIDA ASRank, bgp.he.net, bgp.tools, ipinfo.io, NANOG mailing-list archive searches, and AT&T's own peering-policy page — no operator-reputation or outage-report evidence was found.