Domain technical report
Attention Required! | Cloudflare
chathamhouse.org
IPv42
IPv60
MX2
NS2
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71
Total
75
DNS
90
Email
73
Security
35
Network
60
Availability
Domainchathamhouse.org
IPv42
IPv60
MX records2
StatusActive
DiagnosticsMain findings and recommendations
IPv4 (A)30 / 30 pts · Dns
2 IPv4 address(es) detected.
IPv6 (AAAA)0 / 10 pts · Dns
0 IPv6 address(es) detected.
Name server redundancy20 / 20 pts · Dns
2 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 policy5 / 5 pts · Dns
Certificate authority restriction.
DNS propagation10 / 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
57 day(s) remaining.
Certificate lifetime10 / 10 pts · Security
Full points require at least 30 days remaining.
HTTP security headers8 / 35 pts · Security
2 of 9 evaluated headers detected.
PTR reverse DNS0 / 30 pts · Network
PTR not detected.
IPv4 diversity35 / 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
2 record(s)172.66.155.190 104.20.32.66
AAAA
0 record(s)—
Not configured
CNAME
0 record(s)—
Not configured
MX
2 record(s)5 d219016.a.ess.uk.barracudanetworks.com. 10 d219016.b.ess.uk.barracudanetworks.com.
TXT
6 record(s)"WG2+2CNEccIP464ErDikNop3M/WKXQJuoWDvpDfdGvK5Llf5Z1O3FMjkmFbIj7GVpp0kYJOgmKp1C+PLcmCdmQ==" "facebook-domain-verification=a9ntymz8exfd48w7iul05n99k41ywa" "google-site-verification=6JBCPacl7wpyH0g9RvLpk7ef04zrzjwRb5FmXzaEytE" "MS=ms27739276" "v=spf1 a mx include:spf.protection.outlook.com include:blk.mail.rewardgateway.net include:email-chathamhouse.org include:service-chathamhouse.org ~all" "access-domain-verification=436829d4e35516fd402eb6f8351352bc4e5741e09e52196c81cb1e461ba4ea4d"
NS
2 record(s)lady.ns.cloudflare.com. apollo.ns.cloudflare.com.
SOA
1 record(s)apollo.ns.cloudflare.com. dns.cloudflare.com. 2411489249 10000 2400 604800 1800
CAA
11 record(s)0 issuewild "comodoca.com" 0 issue "pki.goog; cansignhttpexchanges=yes" 0 issuewild "letsencrypt.org" 0 issuewild "digicert.com; cansignhttpexchanges=yes" 0 issuewild "ssl.com" 0 issue "comodoca.com" 0 issue "ssl.com" 0 issue "certainly.com" 0 issue "letsencrypt.org" 0 issue "digicert.com; cansignhttpexchanges=yes" 0 issuewild "pki.goog; cansignhttpexchanges=yes"
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 a mx include:spf.protection.outlook.com include:blk.mail.rewardgateway.net include:email-chathamhouse.org include:service-chathamhouse.org ~all
DMARC
Configuredv=DMARC1; p=quarantine; fo=1; rua=mailto:rua@chathamhouse.org; ruf=mailto:ruf@chathamhouse.org
DKIM
Selector selector1v=DKIM1;k=rsa; t=s; d=chathamhouse.org; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxdkpG+VaogThZeLWq/5qpmaq5tsLVdGV2dCvBc7PcK+t6UM2NX/TczaKeBXq4DkW4ETX/b7p4Xxf6EZ068nQB62o6z8paJW5nkk/GvQ+u+jC0VmW/rGBFQiXw4A2+5eR3M5k34kBlNiW30iDy5Y0pJhbyABIUVkb9StLDJOjz56RZGo8opCCUVMBtF+dx+12okMuMizsnWl36Dt4Phnh1xtrrUc2KtFOpP/fzgo3DZVTWKB25N/uUkgRLgxJVkD6bu9/K3DaRG90nd48OakAP+r4y9B3k+gKB62Zcb6SRsk98zUrgfOrf3WQ5JiC8MNKzQelSID88W1duJ3jBmAmgQIDAQAB
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Attention Required! | Cloudflare
Description
Final URL
https://chathamhouse.org/
HTTP status
403
HTTP
Status
HTTP/2 403
Final URL
https://chathamhouse.org/
Version
3
Server
cloudflare
X-Powered-By
SSL and HTTP securityCertificate, protocol and security headers
SSL certificate
AvailableAvailable
Yes
Issuer
Google Trust Services
CN
chathamhouse.org
Valid from
2026-07-07T09:32:43-05:00
Valid until
2026-10-05T10:30:23-05:00
Days remaining
57
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384
Security headers
2 activeHSTSNot detected
Content Security PolicyNot detected
X-Content-Type-OptionsNot detected
X-Frame-OptionsImplemented
Referrer PolicyImplemented
Permissions PolicyNot detected
Cross-Origin-Opener-PolicyNot detected
Cross-Origin-Embedder-PolicyNot detected
Cross-Origin-Resource-PolicyNot detected
DNS propagationComparison across public resolvers
Public resolver comparison
ConsistentConsistent propagation
5 public resolvers queried.
ResolverServerResultLatency
Google
8.8.8.8104.20.32.66, 172.66.155.190
61,32 ms
Cloudflare
1.1.1.1104.20.32.66, 172.66.155.190
47,13 ms
Quad9
9.9.9.9104.20.32.66, 172.66.155.190
71,91 ms
OpenDNS
208.67.222.222104.20.32.66, 172.66.155.190
63,14 ms
AdGuard
94.140.14.14104.20.32.66, 172.66.155.190
262,73 ms
IP, geolocation and ASNAssociated network information
172.66.155.190
No datasuccess
No
country
region
city
asn
organization
isp
104.20.32.66
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
d219016.a.ess.uk.barracudanetworks.com
Port 25: Closed/unreachable - 8.7 ms - Port 465: Closed/unreachable - 4020.8 ms - Port 587: Closed/unreachable - 99.4 ms - 220 mail.ess.uk.barracuda.com ESMTP (mx-inbound43-45.eu-west-2c.ess.aws)