DNS Report: cornell.edu

Generated: 2026-08-08T17:34:46-05:00

79/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/306 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/205 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 records20/201 MX record(s).
OKSPF25/25SPF policy published.
OKDMARC25/25DMARC policy published.
OKDKIM20/20A DKIM selector was verified.
ERRORMTA-STS0/5Mail transport policy.
ERRORTLS-RPT0/5TLS reporting policy.
OKValid TLS certificate55/55133 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: ad6.cornell.edu
OKIPv4 diversity35/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA 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
128.253.173.246
128.253.173.245
128.253.173.244
128.253.173.243
128.253.173.242
128.253.173.241
AAAA
CNAME
MX
0 cornell-edu.mail.protection.outlook.com.
TXT
"apple-domain-verification=R62yGBLwZW9fUKsm"
"google-site-verification=CauHX8dfnPle2exSgs6k3OuJ_rPzkV1d6n6E9OFJFO8"
"facebook-domain-verification=kiwj4xtbf69jsywfq4nlu7a0z81doz"
"google-site-verification=Gh3jhxuBIdlsH1dgfvJhSGS30sk0OFFvel_I9xQkI5c"
"sending_domain44232=26593424e3f9a029c8413a3f66844938dd909eec6d3c1421168e0fa974950b97"
"7OT7JRZVY1IKZ8J8U84AK2JX4T0J2BM42TL8LSZLV"
"autodesk-domain-verification=9Y0MrpeHy7LiqjUs0Rpy"
"google-site-verification=2Fa7hSAy-FAwrMvWZafs9FUqgGxiNrzJExOmdf5HWAo"
"google-site-verification=V6u6xIMwPwKv6d55ZV4VqbkO1mjLlzyvQKkbz4usOM0"
"notion-domain-verification=mTQLByaJiMJcaoejfap0w1HqVtit4gqXfxNE3z57ugv"
"v=spf1 ip4:128.253.150.144/30 ip4:128.253.150.158 ip4:128.253.150.176 ip4:128.253.150.177 include:_spf.google.com include:spf.protection.outlook.com include:_spf.qualtrics.com -all"
"D750B9F1EBA3435D9D77F95792265223"
"adobe-idp-site-verification=f41c9778dd61e0b903e5daff9095300a03eb9ad4a2a7ce435b4e4eaf76000127"
"NmwZsJfvHf2DUPwvPqMaLkflPi89l0leQfEkMtPmpxQNqlkPy0anm5LZM/N+sxrW+oJfdGKCyoi/qnhAhPy8yg=="
NS
drdns2.cit.cornell.edu.
drdns.cit.cornell.edu.
bigred.cit.cornell.edu.
dns.cit.cornell.edu.
cudns.cit.cornell.edu.
SOA
dns.cit.cornell.edu. nsmaster.cornell.edu. 3608081802 1860 600 2592000 3600
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP