AS12022 — ONEMAIN-AS

AS12022 announces 4 IPv4 prefixes covering 3,072 addresses and 0 IPv6 prefixes.

About this network

OneMain Holdings is a US consumer lender, and its AS carries the registry traces of the companies it used to be.

What it's used for

• Corporate networking. 3,072 addresses across four prefixes, four observed BGP neighbours, no IPv6 announced.

Notable

• Only the largest block carries the current name, as ONEMAIN. A /23 is registered as SLFSWAN, and two /24s are SPRINGLE33-217 and SPRINGLE33-249, both registered to Springleaf Finance Management Co.
• Those two /24s sit inside 12.0.0.0/8, historically AT&T space, so they were assigned out of a carrier's range rather than held directly.

Interesting

• Springleaf was the company that bought OneMain Financial from Citigroup in 2015 and then took its name, so the acquirer is the one whose name survives only in the netnames. SLFSWAN reads as the Springleaf wide area network, a label from an era when a lender's branch offices were joined by leased lines and the WAN was a named thing you built once.
• One address in that AT&T-derived space answers as mail3.webuybulks.com, a domain with no connection to consumer lending. Carrier-assigned blocks change hands, and reverse DNS is frequently the last thing anyone updates, so a stray name like this is a question rather than an answer.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 12.14.217.0/24
• 12.181.249.0/24
• 192.190.188.0/23
• 208.83.152.0/21

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS6461 Zayo Bandwidth
• AS7843 Charter Communications Inc
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS6461 Zayo Bandwidth
• AS7843 Charter Communications Inc
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 6 valid, 0 invalid and 2 not-found announcements; 6 ROAs.
• ASPA: none published.
• IRR: 50% of announcements registered; 7 route objects.
• Listed in as-sets: AS-COMCAST-EDIA, AS-ITXBR1, AS-KDDCUSTOMER2, AS-PROLE, AS-RCN-CUSTOMER, AS-RR-BIZ, AS-TELSTRA-INTL-CUSTOMERS, AS-WINDSTREAM-CUST, AS198949:AS-SD.