Name Servers
usb4java.org. 1200 IN NS ns.ailis.de. usb4java.org. 1200 IN NS ns1.first-ns.de. usb4java.org. 1200 IN NS robotns2.second-ns.de. usb4java.org. 1200 IN NS robotns3.second-ns.com.
SOA Details
usb4java.org. 1200 IN SOA ns.ailis.de. hostmaster.ailis.de. 2026082701 3600 900 604800 600
Certificate Authority Authorization
No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.
DMARC
No DMARC TXT record was returned (expected at `_dmarc.<domain>` with `v=DMARC1`). Without DMARC you cannot publish receiver policy or standard aggregate failure reports (RUA).
DKIM
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
No SPF TXT record was returned (`v=spf1` / `spf2.0/`). SPF tells receivers which hosts may send mail for this domain; without it, aligned DMARC and spoofing defenses are weaker.
MTA-STS
This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).
DNSSEC Public Keys
usb4java.org. 600 IN DNSKEY 257 3 13 WengloeH0q6bypakiyLLKtO2gJtwl8OOc03rbLbeK64e1/3tqFBiSBCNP1yq6kFrR6VxYUHufPur33PcfhV+RQ==
Delegation Signer
usb4java.org. 1200 IN DS 58085 13 2 58C0612CD03D54FD2162142C7B911124928CFA6DE05BE585FA94474E57E7D461
DNSSEC Next Secure
usb4java.org. 600 IN NSEC _github-challenge-usb4java.usb4java.org ["DNSKEY", "NSEC", "RRSIG", "MX", "SOA", "NS", "TYPE65401"]