Hi, On 2/3/16 11:54 AM, Daniel Corbe wrote:

Can anyone venture a guess as to what this might be about?

http://irrexplorer.nlnog.net/search/AS24748:AS-THINX

Why would my ASN be part of a foreign AS-SET? Is this something I need to worry about? My gut reaction is to reach out to ripe.

You can see the full AS-SET object here https://apps.db.ripe.net/search/query.html?searchtext=AS24748:AS-THINX&types=as-set&bflag=true&source=RIPE#resultsAnchor or via traditional whois: whois -h whois.ripe.net AS24748:AS-THINX as-set: AS24748:AS-THINX descr: ASes advertised to IX/peerings members: AS1, AS2, AS3, AS4, AS5 members: AS6, AS10, AS13, AS16, AS17 [ 6795 lines deleted ] members: AS1973394, AS2262647, AS2629023, AS5111197, AS5114372 remarks: 33995 tech-c: ATMA2-RIPE admin-c: ATMA1-RIPE mnt-by: ATMAN-MNT created: 2013-12-11T05:06:03Z last-modified: 2016-02-02T05:07:39Z source: RIPE # Filtered For more details what this is about it's best to reach out to the folk at ATMAN, noc@atman.pl -- Rene