AS277

AS277 is a legacy two-byte autonomous system number registered under ARIN to DXC US Latin America Corporation (ARIN org handle ESLAC, Ashburn, Virginia). The autnum record carries an early registration date of 1989-03-31, placing AS277 among the oldest ARIN-administered ASNs; the current operator brand, DXC Technology, only came into being in April 2017 from the merger of Computer Sciences Corporation with Hewlett Packard Enterprise's Enterprise Services division, so the number itself predates the brand by decades and was held by predecessor entities before its current attribution. Today AS277 behaves as a small enterprise stub network rather than a public ISP or transit provider. It announces six IPv4 prefixes — 192.46.52.0/24, 192.46.53.0/24, 192.46.126.0/24, 192.46.127.0/24, 192.78.32.0/22 and 192.78.36.0/22, roughly 3,072 addresses — and no IPv6. Routing sources agree it has a single upstream, AS3360 (also DXC), no observed downstream customers, and full IPv4 visibility (327/327 RIPE RIS peers). No PeeringDB entry exists, consistent with a closed/stub posture. RPKI ROA coverage appears absent. No notable public network-level abuse signal was found as of 2026-06-21 — AS277 is not in the Spamhaus ASN-DROP list, and no botnet C2, NANOG operational thread, or AbuseIPDB ASN report surfaced. The one dated, neutral security note is a corporate-level Cl0p ransomware claim against the DXC Technology parent in February 2025, with no public evidence tying it to AS277's specific network infrastructure.

Operator

DXC US Latin America Corporation (ARIN org handle ESLAC; Ashburn, VA) [Confirmed] — ARIN RDAP autnum/277, whois.arin.net/rest/asn/AS277

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP autnum/277

Allocated

1989-03-31 (ARIN autnum top-level registration event; a first-party RIR registry fact, NOT an IEEE/database artifact); last changed 2023-12-07 [Confirmed] — ARIN RDAP autnum/277 top-level events

Org status

active subsidiary of DXC Technology Company (NYSE: DXC), a publicly traded multinational IT-services firm headquartered in Ashburn, VA; DXC formed 2017-04-03 from the CSC + HPE Enterprise Services merger [Confirmed] — en.wikipedia.org/wiki/DXC_Technology, ARIN RDAP autnum/277

Contacts

abuse@dxc.com / +1-703-245-9675 (DXC Security Incident Response Control Centre, Tysons, VA 22102); ipaddr@dxc.com / +1-800-524-7638 (Ashburn, VA 20147) [Confirmed] — ARIN RDAP autnum/277

Website

https://dxc.com [Confirmed] — ip2location.com/as277

Security/abuse context (NEUTRAL, DATED)

no notable public network-level abuse signal as of 2026-06-21 — not in Spamhaus ASN-DROP, no Feodo Tracker C2, no NANOG abuse thread, no AbuseIPDB ASN report [Confirmed]. Parent DXC Technology was named in a Cl0p ransomware claim (~Feb 2025, broad multi-victim campaign, breach size unknown); not publicly linked to AS277 prefixes

Network & routing

Network type

content/enterprise IT-services stub network; not a public ISP or transit provider [Confirmed] — bgp.tools/as/277, ip2location.com/as277

Size

6 IPv4 prefixes (~3,072 addresses: two /22 + four /24); 0 IPv6 prefixes [Confirmed] — stat.ripe.net announced-prefixes / routing-status (resource=AS277)

Routing/visibility

fully visible on IPv4 (327/327 RIS peers); not announced on IPv6 (0/322) [Confirmed] — stat.ripe.net routing-status

Upstreams/peers

single upstream AS3360 (DXC US Latin America Corporation, same org family); no downstream customers observed [Likely] — bgp.he.net/AS277, bgp.tools/as/277

RPKI

no ROA coverage observed (RPKI valid 0, invalid 0 per bgp.he.net); prefixes match trusted IRR sources [Likely] — bgp.he.net/AS277, bgp.tools/as/277

Customer cone / AS rank

Unknown — not published in consulted sources [Unknown]

Peering policy

Unknown — no PeeringDB entry for AS277 (404); stub posture inferred [Unknown] — peeringdb.com, bgp.tools/as/277

Notable usage

internal enterprise network for DXC subsidiary operations; org holds multiple ASNs across the DXC portfolio (e.g. AS3360) [Confirmed for AS3360 family; Likely for broader portfolio] — bgp.tools/as/277, networksdb.io/ip-addresses-of/dxc-us-latin-america-corp

ASN name

DXC-AS277 [Confirmed] — ARIN RDAP autnum/277, bgp.he.net/AS277

First/last routing seen

first seen 2001-12-14 (192.31.47.0/24, no longer announced); last seen 2026-06-21 (192.46.52.0/24) [Confirmed] — stat.ripe.net routing-status

Analyst note

A5-community proposed a Global Crossing historical lineage; this is NOT corroborated by the ARIN registry (org ESLAC = DXC) and A5 abstained on the registration date, so the lineage claim is treated as unverified and omitted. allocated_date 1989-03-31 is taken solely from the autnum top-level registration event (A1 raw RDAP, A2, A3 concur), not from entity/org-level events (2018–2026), which are decoys.