https://cluster-site.onrender.com/tags/teamcymru/ Recent content in Teamcymru on Tenu Tech Brief Hugo -- 0.146.0 en-us Tue, 24 Feb 2026 06:03:11 +0000 https://cluster-site.onrender.com/posts/from-the-stupid-dns-tricks-department-ipasn.net/ Mon, 09 Feb 2026 04:40:06 +0000 https://cluster-site.onrender.com/posts/from-the-stupid-dns-tricks-department-ipasn.net/ • RIRs maintain databases mapping IPs and ASNs, queryable via whois. • Team Cymru offers DNS-based IP-to-ASN lookup, requiring reversed octets for queries. • IPv4 query example: di