Super User
superuser.com
Q&A for computer enthusiasts and power users
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superuser.com
Q&A for computer enthusiasts and power users
1 IPv4 address(es) detected.
0 IPv6 address(es) detected.
2 NS record(s); 2 or more required.
Authoritative zone record.
Both DS and DNSKEY are required.
Certificate authority restriction.
Agreement between public resolvers.
0 MX record(s).
SPF policy published.
DMARC policy published.
No tested DKIM selector responded.
Mail transport policy.
TLS reporting policy.
84 day(s) remaining.
Full points require at least 30 days remaining.
3 of 9 evaluated headers detected.
PTR not detected.
Two or more IPv4 addresses receive full points.
AAAA availability.
At least one address family must resolve.
HTTP/2 200
Final URL uses HTTPS.
198.252.206.1
Not configured
Not configured
Not configured
"google-site-verification=OAR5h64bEL-kZpeYBCVWJxGxl7P1TjmSzebVXD0J5to" "v=spf1 -all"
sureena.ns.cloudflare.com. damian.ns.cloudflare.com.
damian.ns.cloudflare.com. dns.cloudflare.com. 2411262548 10000 2400 604800 1800
0 issuewild "ssl.com" 0 issuewild "letsencrypt.org" 0 issuewild "sectigo.com" 0 issuewild "comodoca.com" 0 issue "comodoca.com" 0 issue "sectigo.com" 0 issue "pki.goog; cansignhttpexchanges=yes" 128 iodef "mailto:sysadmin-team@stackoverflow.com" 0 issuewild "digicert.com; cansignhttpexchanges=yes" 0 issuewild "pki.goog; cansignhttpexchanges=yes" 0 issue "digicert.com; cansignhttpexchanges=yes" 0 issue "letsencrypt.org" 0 issue "ssl.com"
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
Not configured
v=spf1 -all
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-aggregates@stackoverflow.com; ruf=mailto:dmarc-forensics@stackoverflow.com; fo=1
Not configured
5 public resolvers queried.
8.8.8.81.1.1.19.9.9.9208.67.222.22294.140.14.14Port 25: Closed/unreachable - 0.8 ms - Port 465: Closed/unreachable - 4019.9 ms - Port 587: Closed/unreachable - 4011.7 ms -