Domain technical report
Access Denied
postoffice.co.uk
IPv42
IPv62
MX2
NS6
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88
Total
70
DNS
90
Email
88
Security
100
Network
100
Availability
Domainpostoffice.co.uk
IPv42
IPv62
MX records2
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
2 IPv4 address(es) detected.
IPv6 (AAAA)10 / 10 pts · Dns
2 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
6 NS record(s); 2 or more required.
SOA record10 / 10 pts · Dns
Authoritative zone record.
DNSSEC chain0 / 15 pts · Dns
Both DS and DNSKEY are required.
CAA policy0 / 5 pts · Dns
Certificate authority restriction.
DNS propagation0 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
2 MX record(s).
SPF25 / 25 pts · Mail
SPF policy published.
DMARC25 / 25 pts · Mail
DMARC policy published.
DKIM20 / 20 pts · Mail
A DKIM selector was verified.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
62 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers23 / 35 pts · Security
6 of 9 evaluated headers detected.
PTR reverse DNS30 / 30 pts · Network
PTR: a23-64-114-20.deploy.static.akamaitechnologies.com
IPv4 diversity35 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity35 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response40 / 40 pts · Availability
HTTP/1.1 200 OK
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
2 record(s)23.64.114.20 23.64.114.27
AAAA
2 record(s)2600:1407:7400:5f::17d1:5eeb 2600:1407:7400:5f::17d1:5ee8
CNAME
0 record(s)—
Not configured
MX
2 record(s)5 eu-smtp-inbound-2.mimecast.com. 5 eu-smtp-inbound-1.mimecast.com.
TXT
17 record(s)"google-site-verification=7tNagvYW7ZfVFtlh137vYtrFVa9zfTlB_zQXVra-4Jw"
"blhhqlt51ll46bq7jthrgl3jg55m86tq"
"str7z0qd5sm76m407w3mzpktss2jh05z"
"asvdns_ce1be1d0-c649-4d4d-914a-4723a84ddfd0"
"00d4l000000cs6guas"
"0b5681d4de644757be50cd0d4bb829c7"
"Yx6pmfE0NKAhkPOhxU7/gg==:E290-4DD2-CAB4-47A8-069D-B760-BD40-305D"
"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"
"tc24pypwh8zrx9sm5x9dqrfj0y6sqpvj"
"Yx6pmfE0NKAhkPOhxU7/gg==:FA9F-F46B-E75A-F4CC-CC91-75AF-1CF0-6B8C"
"atlassian-domain-verification=2nVCQhH0s703CsXKBbesMRqPOAi7zOnDYbO2THRv3Sa2KQ7BhPBqawt5hSvWMZQL"
"fdnqw85wtpc0l0j2zqldpmv8swgjnn69"
"brevo-code:70df7540dafa8ea20f0eccbc493bb5ae"
"0gtkfw2yg36xkx2z3hq5n8sdxf4shcb6"
"v1gc6w5fppxh1nsgwlxcd9hx49zd2gl1"
"google-site-verification=S4LejI4JQMNyMky20rLji9HDFlRoFmEtpzPdNw8V4rQ"
"apple-domain-verification=u9ZMIVALbmhg6Nxh"NS
6 record(s)a2-64.akam.net. a24-64.akam.net. a1-59.akam.net. a5-64.akam.net. a13-67.akam.net. a12-65.akam.net.
SOA
1 record(s)a1-59.akam.net. hostmaster.postoffice.co.uk. 2025050776 3600 600 604800 300
CAA
0 record(s)—
Not configured
DS
0 record(s)—
Not configured
DNSKEY
0 record(s)—
Not configured
RRSIG
0 record(s)—
Not configured
NSEC
0 record(s)—
Not configured
NSEC3
0 record(s)—
Not configured
SRV
0 record(s)—
Not configured
NAPTR
0 record(s)—
Not configured
TLSA
0 record(s)—
Not configured
SSHFP
0 record(s)—
Not configured
SPF
Configuredv=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~allDMARC
Configuredv=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email
DKIM
Selector defaultv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD0r+hxlhHMweX+o6697mcM614PQsFVc/F1Dyyq89rlNlbSBFBm4qedZuLhS4IYzvD5okh4hHurfootgZp7Z1mUQ85EKAiyqMJrsQR14prSG+evQkcLc+Tmb6gdC+rQ1nx+vOkP21Gys5zoXyZFPNQJbP1ktkXZ8vxN3Dn+TpLDvwIDAQAB
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Access Denied
Description
Final URL
https://postoffice.co.uk/
HTTP status
403
HTTP
Status
HTTP/1.1 200 OK
Final URL
https://www.postoffice.co.uk/
Version
2
Server
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Let's Encrypt
CN
www.postoffice.co.uk
Valid from
2026-07-14T02:33:59-05:00
Valid until
2026-10-12T02:33:58-05:00
Days remaining
62
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
6 activeHSTSImplemented
Content Security PolicyImplemented
X-Content-Type-OptionsImplemented
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyImplemented
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ReviewDifferences detected
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.823.64.114.20, 23.64.114.27
52,81 ms
Cloudflare
1.1.1.123.66.127.137, 23.66.127.158
74,71 ms
Quad9
9.9.9.923.211.127.28, 23.211.127.4
438,16 ms
OpenDNS
208.67.222.22223.64.114.20, 23.64.114.27
33,83 ms
AdGuard
94.140.14.1423.48.224.199, 23.48.224.203
62,19 ms
IP, geolocation and ASNAssociated network information
23.64.114.20
No datasuccess
No
country
region
city
asn
organization
isp
23.64.114.27
No datasuccess
No
country
region
city
asn
organization
isp
Visitor information
Visitorip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No
SMTPEmail port connectivity
eu-smtp-inbound-2.mimecast.com
Port 25: Closed/unreachable - 0.9 ms - Port 465: Closed/unreachable - 4020.6 ms - Port 587: Closed/unreachable - 95 ms - 220 eu-smtp-inbound-1.mimecast.com ESMTP; Tue, 11 Aug 2026 00:37:23 +0100