Domain technical report
Just a moment...
city.ac.uk
IPv41
IPv60
MX1
NS4
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79
Total
70
DNS
100
Email
96
Security
50
Network
60
Availability
Domaincity.ac.uk
IPv41
IPv60
MX records1
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
1 IPv4 address(es) detected.
IPv6 (AAAA)0 / 10 pts · Dns
0 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
4 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 propagation10 / 10 pts · Dns
Agreement between public resolvers.
MX records20 / 20 pts · Mail
1 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-STS5 / 5 pts · Mail
Mail transport policy.
TLS-RPT5 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
31 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers31 / 35 pts · Security
8 of 9 evaluated headers detected.
PTR reverse DNS30 / 30 pts · Network
PTR: 211.41.245.43.in-addr.arpa
IPv4 diversity20 / 35 pts · Network
Two or more IPv4 addresses receive full points.
IPv6 connectivity0 / 35 pts · Network
AAAA availability.
DNS resolution40 / 40 pts · Availability
At least one address family must resolve.
HTTP response0 / 40 pts · Availability
HTTP/2 403
HTTPS final URL20 / 20 pts · Availability
Final URL uses HTTPS.
DNS and emailPublished records and email configuration
A
1 record(s)43.245.41.211
AAAA
0 record(s)—
Not configured
CNAME
0 record(s)—
Not configured
MX
1 record(s)0 city-ac-uk.mail.protection.outlook.com.
TXT
12 record(s)"msfpkey=23ya36mhyo78hr2n1sm333xrr" "google-site-verification=cHaSUsb3kzMbERTM5GrktOMSjGL_y8aKZe_BwyOmNV4" "onetrust-domain-verification=6b3bd6284f7c4841bbe79c694e1480d6" "google-site-verification=WbBSOwt3pC97FSgPxqaJL_V6a_i_QL_eDGeON7ZLf-A" "airtable-verification=00893238b74b01c9c3a560357af50f91" "amazonses:sVnIYMOurLU7rmy/km/KiPr9j2ce14sCW+z4zEc4R7M=" "v=spf1 redirect=city.ac.uk.on.autospf.email" "coursera-domain-verification=hbAEuz1Zpt3xJUQmXBuyEfdD2VtcB02RCu7Ne5bPFAOrAdAFMJWvsf3tV2Z2hpv4" "autodesk-domain-verification=sFrgq_TvM7MiV0VVMpLq" "9YBfGz9sHPN9dKgXjvGIWwNjFUB28ujWHsaYF4iro6976khTU8IUSxKXpAJQBt5o7d6oJLhNEzQXQTf6aZY8Gg==" "ca3-e03f0c811bf944c592868498208eca1b" "dropbox-domain-verification=wxk61o8p2y7h"
NS
4 record(s)ns3.ja.net. ns01.city.ac.uk. ns4.ja.net. ns02.city.ac.uk.
SOA
1 record(s)ns01.city.ac.uk. hostmaster.city.ac.uk. 2636 10800 1080 2419200 3600
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
1 record(s)100 10 "s" "x-eduroam:radius.tls" "" _radsec._tcp.roaming.ja.net.
TLSA
0 record(s)—
Not configured
SSHFP
0 record(s)—
Not configured
SPF
Configuredv=spf1 redirect=city.ac.uk.on.autospf.email
DMARC
Configuredv=DMARC1; p=quarantine; sp=reject; rua=mailto:b232046f4afa.a@dmarcinput.com,mailto:dmarc@city.ac.uk; ruf=mailto:b232046f4afa.f@dmarcinput.com,mailto:dmarc@city.ac.uk; adkim=r; aspf=r; fo=1; pct=100
DKIM
Selector selector1v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA/OatkXEGnXYpaI66N3uP2gXchKnSORqHPmLgU10u/hN80pG1263N6WjQVqc03yGkGqrCG+XvnpX0PGiDT5FAKD6jvJdF6tofSzDAQrQ14AQqY2+8/fL3NlwAkcB7hw4GVIKe0cP3c6T9Kene+LNeedmNTTR4vnvrzqJA24l4hMPY/NtHu6xRUqSOvq6OxSVsg/g9UlDwOJ9CVmAK26TnA6evW5Ma2QbObQUXU5XzhRuGnZyHH+Ylj7hbFSQywx1Ga85fy9U73WfEGn4fsFQtrKee4HtHwLvYk8mWQ6MuQQq/mql1JUMzfug0djxDtDvTA4vr6Mn0ufaUgiq6VIhOQQIDAQAB;
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Just a moment...
Description
Final URL
https://www.citystgeorges.ac.uk/
HTTP status
403
HTTP
Status
HTTP/2 403
Final URL
https://www.citystgeorges.ac.uk/
Version
3
Server
cloudflare
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Let's Encrypt
CN
city.ac.uk
Valid from
2026-06-12T07:45:13-05:00
Valid until
2026-09-10T07:45:12-05:00
Days remaining
31
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
8 activeHSTSNot detected
Content Security PolicyImplemented
X-Content-Type-OptionsImplemented
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyImplemented
Cross-Origin-Opener-PolicyImplemented
Cross-Origin-Embedder-PolicyImplemented
Cross-Origin-Resource-PolicyImplemented
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.843.245.41.211
141,31 ms
Cloudflare
1.1.1.143.245.41.211
126,10 ms
Quad9
9.9.9.943.245.41.211
2.080,52 ms
OpenDNS
208.67.222.22243.245.41.211
212,73 ms
AdGuard
94.140.14.1443.245.41.211
286,27 ms
IP, geolocation and ASNAssociated network information
43.245.41.211
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
city-ac-uk.mail.protection.outlook.com
Port 25: Closed/unreachable - 27 ms - Port 465: Closed/unreachable - 4055.7 ms - Port 587: Closed/unreachable - 4048.3 ms -