DNS Report: teachingamericanhistory.org

Generated: 2026-08-11T23:39:30-05:00

79/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/302 IPv4 address(es) detected.
OKIPv6 (AAAA)10/102 IPv6 address(es) detected.
OKName server redundancy20/202 NS record(s); 2 or more required.
OKSOA record10/10Authoritative zone record.
ERRORDNSSEC chain0/15Both DS and DNSKEY are required.
ERRORCAA policy0/5Certificate authority restriction.
OKDNS propagation10/10Agreement between public resolvers.
OKMX records20/205 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
ERRORDKIM0/20No tested DKIM selector responded.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/5578 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers8/352 of 9 evaluated headers detected.
ERRORPTR reverse DNS0/30PTR not detected.
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
OKIPv6 connectivity35/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/2 200
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
172.67.223.12
104.21.59.106
AAAA
2606:4700:3032::6815:3b6a
2606:4700:3032::ac43:df0c
CNAME
MX
30 alt2.aspmx.l.google.com.
50 aspmx3.googlemail.com.
20 alt1.aspmx.l.google.com.
40 aspmx2.googlemail.com.
10 aspmx.l.google.com.
TXT
"google-site-verification=5KaJXwRSam8fzHoOPVACHS5aK4TS0tSWlnkPe5jXNiQ"
"google-site-verification=crMgsrHCrw9HKqJ8Ij0DONZwakNIgVhYtojVQAhzh0E"
"facebook-domain-verification=fwbtvfez7yaut7founxp9hsmu2tk61"
"v=spf1 include:aspmx.pardot.com include:_spf.google.com include:sendgrid.net ip4:198.251.78.26 ip4:5.161.255.242 ip6:2607:f1c0:f024:ce00::1 ip6:2a01:4ff:f0:883a::1 include:47228921.spf10.hubspotemail.net ~all"
"google-site-verification=4jbdJZyT3e67cMro9djfp-vD9rTPrIDPOICwvjhDnHI"
"pardot556702=a7b7f3c4fd0434b147348e91b79134d81b32dee7790cb9a5fd593a95a6fe721e"
NS
sri.ns.cloudflare.com.
meadow.ns.cloudflare.com.
SOA
meadow.ns.cloudflare.com. dns.cloudflare.com. 2411025424 10000 2400 604800 1800
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP