DNS Report: nsidc.org

Generated: 2026-08-10T00:15:18-05:00

79/100

Diagnostics

StatusCheckPointsDetails
OKIPv4 (A)30/301 IPv4 address(es) detected.
ERRORIPv6 (AAAA)0/100 IPv6 address(es) detected.
OKName server redundancy20/204 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 records20/202 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 certificate55/5562 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
WARNINGHTTP security headers8/352 of 9 evaluated headers detected.
OKPTR reverse DNS30/30PTR: k2.colorado.edu
WARNINGIPv4 diversity20/35Two or more IPv4 addresses receive full points.
ERRORIPv6 connectivity0/35AAAA availability.
OKDNS resolution40/40At least one address family must resolve.
OKHTTP response40/40HTTP/1.1 200 OK
OKHTTPS final URL20/20Final URL uses HTTPS.

DNS Records

TipoValues
A
128.138.135.43
AAAA
CNAME
MX
15 mx1-us1.ppe-hosted.com.
15 mx2-us1.ppe-hosted.com.
TXT
"v=spf1 ip4:128.138.135.55 include:colorado.edu include:mail.zendesk.com -all"
NS
ns1.p201.dns.oraclecloud.net.
ns4.p201.dns.oraclecloud.net.
ns3.p201.dns.oraclecloud.net.
ns2.p201.dns.oraclecloud.net.
SOA
ns1.p201.dns.oraclecloud.net. hostmaster.nsidc.org. 2023051621 3600 600 604800 1800
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP