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89
Total
100
DNS
80
Email
77
Security
85
Network
100
Availability
Domainlichess.org
IPv41
IPv61
MX records5
StatusActive
Domain technical report

lichess.org • Free Online Chess

lichess.org

Free online chess server. Play chess in a clean interface. No registration, no ads, no plugin required. Play chess with the computer, friends or random opponents.

Generated: 2026-08-09T08:42:49-05:00 · Cached result

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IPv41
IPv61
MX5
NS2

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

1 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 chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

5 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-STS5 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

82 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: lichess.org

i
IPv4 diversity20 / 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/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
37.187.205.99

AAAA

1 record(s)
2001:41d0:307:b200::

CNAME

0 record(s)
—

Not configured

MX

5 record(s)
10 alt3.aspmx.l.google.com.
1 aspmx.l.google.com.
5 alt1.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt4.aspmx.l.google.com.

TXT

5 record(s)
"google-site-verification=nTK9KGLK0Uk6ScCHMRZKQsh7UEFGc3f6NY1nQ2PuHHA"
"google-site-verification=iHavQOc6X8aYmnHhfovb-1hseQ3bxT79YJiwhDzhoTo"
"v=spf1 include:_spf.google.com include:_spf.tem.scaleway.com -all"
"google-site-verification=fZ08Imok7kcLaGcJg7BKQExO6vXGgSgsJUsW6JalUCo"
"google-site-verification=lcne9sTo24rMZhlrGEXB3TtkTnnpZqH_hNo20DezQEc"

NS

2 record(s)
dimitris.ns.cloudflare.com.
serenity.ns.cloudflare.com.

SOA

1 record(s)
dimitris.ns.cloudflare.com. dns.cloudflare.com. 2411613315 10000 2400 604800 1800

CAA

10 record(s)
0 issue "pki.goog; cansignhttpexchanges=yes"
0 issue "comodoca.com"
0 issuewild "digicert.com; cansignhttpexchanges=yes"
0 issuewild "letsencrypt.org"
0 issue "digicert.com; cansignhttpexchanges=yes"
0 issuewild "pki.goog; cansignhttpexchanges=yes"
0 issue "ssl.com"
0 issue "letsencrypt.org"
0 issuewild "comodoca.com"
0 issuewild "ssl.com"

DS

1 record(s)
2371 13 2 80E3C5B09C3C1C1B70B5707CF8230936424EA0D3AC056ED30E9516E6 334FB814

DNSKEY

2 record(s)
256 3 13 oJMRESz5E4gYzS/q6XDrvU1qMPYIjCWzJaOau8XNEZeqCYKD5ar0IRd8 KqXXFJkqmVfRvMGPmM1x8fGAa2XhSA==
257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+ KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==

RRSIG

5 record(s)
DNSKEY 13 2 3600 20260914201409 20260715201409 2371 lichess.org. kUYIm6ATLC+84FFJCN9jBPpvrv81NZ2/2ecit0z6cSjZC/biY7y2Ddq1 sOF376+oHMVmJuSoFAGf8sh5lb7w4Q==
SOA 13 2 1800 20260810144237 20260808124237 34505 lichess.org. dtbd14Tuw5mw2/witi7KNtLEoE2yG92f5mJanT8BGPpsRdiissrVqyPj 7LHvo7NLQDODbhqNKsCAFI2fk79FXA==
NS 13 2 86400 20260810144237 20260808124237 34505 lichess.org. JbUGIAttEPA3afeoFIZjGrpKm703PfdNet273ulfkWvpHfEXmgvDwZH+ pWZDSFgafCayCwcLqginSgQh5QYXpg==
MX 13 2 3600 20260810144237 20260808124237 34505 lichess.org. R7pyzxdoGFYslAf2N0QBl0RzwPyUBmcql5nH2blg02UnTNVJLhytN0nr ub2PyYicof1Q1juX/ISK4ZOeAn6maw==
DS 8 2 3600 20260822152352 20260801142352 44925 org. KWk0qoctDwX2RbpnEGLiiWR8cOQDtAxWBp0uiemfTGtoNKIFjeJ12npk 4HdEdoeoWQp6xgdZjUAArmgXVWo34EZF+FDfS+bd2Zrt0lUZo7DiQmi3 OkEG7oMjbfNRnmXffgELNBVhLZL0WCiH2O6s86RY2zwvj/Di99m+/jVd jLs=

NSEC

1 record(s)
\000.lichess.org. A NS SOA PTR HINFO MX TXT AAAA LOC SRV NAPTR CERT SSHFP RRSIG NSEC DNSKEY TLSA SMIMEA HIP CDS CDNSKEY OPENPGPKEY SVCB HTTPS URI CAA

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

Configured
v=spf1 include:_spf.google.com include:_spf.tem.scaleway.com -all

DMARC

Configured
v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s

DKIM

Not found
—

Not configured

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
lichess.org • Free Online Chess
Description
Free online chess server. Play chess in a clean interface. No registration, no ads, no plugin required. Play chess with the computer, friends or random opponents.
Final URL
https://lichess.org/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://lichess.org/
Version
3
Server
nginx
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
mta-sts.lichess.org
Valid from
2026-08-02T02:48:40-05:00
Valid until
2026-10-31T02:48:39-05:00
Days remaining
82
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

3 active
✓
HSTSImplemented
—
Content Security PolicyNot detected
—
X-Content-Type-OptionsNot detected
✓
X-Frame-OptionsImplemented
—
Referrer PolicyNot detected
✓
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

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
37.187.205.99
47,54 ms
Cloudflare
1.1.1.1
37.187.205.99
19,05 ms
Quad9
9.9.9.9
37.187.205.99
23,74 ms
OpenDNS
208.67.222.222
37.187.205.99
25,06 ms
AdGuard
94.140.14.14
37.187.205.99
43,47 ms

IP, geolocation and ASNAssociated network information

37.187.205.99

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
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

alt3.aspmx.l.google.com

Port 25: Closed/unreachable - 0.7 ms - 
Port 465: Closed/unreachable - 4019.2 ms - 
Port 587: Closed/unreachable - 4007 ms -

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