DNS Report: core.ac.uk

Generated: 2026-08-08T22:11:18-05:00

81/100

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 records20/201 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 certificate55/5573 day(s) remaining.
OKCertificate lifetime10/10Full points require at least 30 days remaining.
ERRORHTTP security headers0/350 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
172.67.191.205
104.21.20.56
AAAA
2606:4700:3033::ac43:bfcd
2606:4700:3035::6815:1438
CNAME
MX
0 core-ac-uk.mail.protection.outlook.com.
TXT
"ms-domain-verification=3529416e-6049-41a0-8889-84c4c8e49c25"
"CC013172-C797-4C59-8252-135EE277A6C7"
"google-site-verification=N1l1LngrCrqAZIsIhHlh1UtPsMmM-Bt3PtfK4yM_l58"
"v=spf1 include:spf.protection.outlook.com include:spf.core.ac.uk  include:_spf.mlsend.com ip4:137.108.232.47 ip4:137.108.232.48 ip4:137.108.170.8 ip4:137.108.170.38 ip4:137.108.170.40 -all"
"atlassian-domain-verification=ME7l7TGCJ9xfQDWdKMs9sm68zGdtOmB6VYBw/R969AtLbajdxCR8ut8NTe3GEMFR"
NS
romina.ns.cloudflare.com.
john.ns.cloudflare.com.
SOA
john.ns.cloudflare.com. dns.cloudflare.com. 2410893717 10000 2400 604800 1800
CAA
DS
DNSKEY
RRSIG
NSEC
NSEC3
SRV
NAPTR
TLSA
SSHFP