Domain technical report
Just a moment...
nfb.org
IPv42
IPv62
MX3
NS2
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78
Total
85
DNS
70
Email
96
Security
70
Network
60
Availability
Domainnfb.org
IPv42
IPv62
MX records3
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
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
3 MX record(s).
SPF25 / 25 pts · Mail
SPF policy published.
DMARC25 / 25 pts · Mail
DMARC policy published.
DKIM0 / 20 pts · Mail
No tested DKIM selector responded.
MTA-STS0 / 5 pts · Mail
Mail transport policy.
TLS-RPT0 / 5 pts · Mail
TLS reporting policy.
Valid TLS certificate55 / 55 pts · Security
52 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 DNS0 / 30 pts · Network
PTR not detected.
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 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)172.66.40.213 172.66.43.43
AAAA
2 record(s)2606:4700:3108::ac42:2b2b 2606:4700:3108::ac42:28d5
CNAME
0 record(s)—
Not configured
MX
3 record(s)20 _dc-mx.056edf8b3b46.nfb.org. 10 us-smtp-inbound-1.mimecast.com. 10 us-smtp-inbound-2.mimecast.com.
TXT
7 record(s)"google-site-verification=-uXunOYeGRLAXaF1PI0NmceVUZL0ki32hr9GEyhG2uc" "google-site-verification=lnKtLHVIepo8_nKumgExnyLUADdxmjAo2TRR2jP9E6o" "google-site-verification=phXGE8conqcbARs4I4a4YXSNVDjZd3PwE15KT2s1R0s" "google-site-verification=n5K1wOf-sYYNsmbWf-Otv0oXpQfieMwycD9P7HVioAw" "v=spf1 mx ip4:50.232.19.154 ip4:159.183.106.203 ip4:107.0.121.60 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:sendgrid.net include:amazonses.com include:_spf.intacct.com -all" "ZOOM_verify_wcZ21glLIzEdtDRJkktGEp" "amazonses:6iIU7Xv7xxTXh2vbIajt5rT68zNl5mfp5Ze07cBUVJw="
NS
2 record(s)ajay.ns.cloudflare.com. tess.ns.cloudflare.com.
SOA
1 record(s)ajay.ns.cloudflare.com. dns.cloudflare.com. 2411882612 10000 2400 604800 1800
CAA
13 record(s)0 issue "amazon.com" 0 issuewild "letsencrypt.org" 0 issuewild "comodoca.com" 0 issuewild "pki.goog; cansignhttpexchanges=yes" 0 issuewild "digicert.com; cansignhttpexchanges=yes" 0 issue "ssl.com" 0 issue "godaddy.com" 0 issue "digicert.com; cansignhttpexchanges=yes" 0 issue "comodoca.com" 0 issuewild "godaddy.com" 0 issuewild "ssl.com" 0 issue "letsencrypt.org" 0 issue "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 mx ip4:50.232.19.154 ip4:159.183.106.203 ip4:107.0.121.60 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:sendgrid.net include:amazonses.com include:_spf.intacct.com -all
DMARC
Configuredv=DMARC1; p=none; rua=mailto:dmarcreports@nfb.org
DKIM
Not found—
Not configured
Analyzed webpageMetadata and HTTP response
Title and description
ExtractedTitle
Just a moment...
Description
Final URL
https://nfb.org/
HTTP status
403
HTTP
Status
HTTP/2 403
Final URL
https://nfb.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
nfb.org
Valid from
2026-07-05T14:00:31-05:00
Valid until
2026-10-03T15:00:17-05:00
Days remaining
52
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
8.8.8.8172.66.40.213, 172.66.43.43
57,95 ms
Cloudflare
1.1.1.1172.66.40.213, 172.66.43.43
57,88 ms
Quad9
9.9.9.9172.66.40.213, 172.66.43.43
54,99 ms
OpenDNS
208.67.222.222172.66.40.213, 172.66.43.43
77,60 ms
AdGuard
94.140.14.14172.66.40.213, 172.66.43.43
330,13 ms
IP, geolocation and ASNAssociated network information
172.66.40.213
No datasuccess
No
country
region
city
asn
organization
isp
172.66.43.43
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
_dc-mx.056edf8b3b46.nfb.org
Port 25: Closed/unreachable - 14.6 ms - Port 465: Closed/unreachable - 4020.3 ms - Port 587: Closed/unreachable - 4033.3 ms -