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Total

DNS

100

Email

Security

Network

100

Availability

Domaingrapheneos.org

IPv41

IPv61

MX records1

StatusActive

Domain technical report

GrapheneOS: the private and secure mobile OS

grapheneos.org

GrapheneOS is a security and privacy focused mobile OS with Android app compatibility.

Generated: 2026-08-11T01:56:59-05:00 · Cached result

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IPv41

IPv61

MX1

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 propagation0 / 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

4 day(s) remaining.

Certificate lifetime2 / 10 pts · Security

Full points require at least 30 days remaining.

✓

HTTP security headers35 / 35 pts · Security

9 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: dal.grapheneos.org

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)

121.127.40.19

AAAA

1 record(s)

2a02:6ea0:d206::1

CNAME

0 record(s)

—

Not configured

MX

1 record(s)

0 mail.grapheneos.org.

TXT

6 record(s)

"oa1:btc recipient_address=bc1prqf5hks5dnd4j87wxw3djn20559yhj7wvvcv6fqxpwlg96udkzgqtamhry; recipient_name=GrapheneOS Foundation; tx_description=Donation to GrapheneOS Foundation;"
"oa1:xmr recipient_address=862CebHaBpFPgYoNC6zw4U8rsXrDjD8s5LMJNS7yVCRHMUKr9dDi7adMSLUMjkDYJ85xahQTCJHHyK5RCvvRJu9x7iSzN9D; recipient_name=GrapheneOS Foundation; tx_description=Donation to GrapheneOS Foundation;"
"v=spf1 a:mail.grapheneos.org -all"
"facebook-domain-verification=jv1fv1fh38fz7v1yi5jai9e0c6sid2"
"yandex-verification: 10fdf27f68b946c5"
"google-site-verification=QCDUfSSfeAUufP-H3m4f5uvhknjIZVBVVmMSDaFRdz0"

NS

2 record(s)

ns1.grapheneos.org.
ns2.grapheneos.org.

SOA

1 record(s)

ns1.grapheneos.org. hostmaster.grapheneos.org. 2026081100 3600 1800 1209600 3600

CAA

5 record(s)

0 iodef "mailto:caa-reports@grapheneos.org"
0 issuemail ";"
0 issue "letsencrypt.org; validationmethods=http-01; accounturi=https://acme-staging-v02.api.letsencrypt.org/acme/acct/254068453"
0 issue "letsencrypt.org; validationmethods=http-01; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/2919943146"
0 issuevmc ";"

DS

1 record(s)

35166 13 2 EABEFF74404F49D8F65B1D765E10EE3E83A0B57B6C5F421ECFAC93B5 8779ECFE

DNSKEY

1 record(s)

257 3 13 3qeqaXyJS3XFTPjPP3KkKe6eoGObQ7hQdbSuETyqCQaTejTudbH/TRGM rViP737n3UYw9ZFGK84cfu5EARFkMQ==

RRSIG

5 record(s)

SOA 13 2 86400 20260820000000 20260730000000 35166 grapheneos.org. JqxdSqdwm3zQSagfcep+rP35BExdtYV31SAUMEXU7Za5Tcy/7QPt5m5P w+qK1+Ec19bqtp8eiSYCzsKhtbUGoQ==
AAAA 13 2 300 20260820000000 20260730000000 35166 grapheneos.org. GBgI0qppjIIbdvJFJiZxRBGjrsF6PTm4xQCPw64v8BR/rqX+x7iW8NoB Aa5vqO3TaAyAjIv85NdSFauKmAyIEw==
DS 8 2 3600 20260830152406 20260809142406 44925 org. f4AYrpMwCLnAMeN+nJ9m+v65Zov7RhMTdpRImBcOlU7nhAPRX9Jkv8w7 q9AOXD0L5HJnvhnY9rKIzP63EhdV9X2ax6cz4z0M0u4xH9uqxaX1Hci6 uKf82i5RdxEwcLiv1w1pVKumBbaT/U4gb/g5aYrKcZyvMdAazqfIwf6V AMQ=
MX 13 2 86400 20260820000000 20260730000000 35166 grapheneos.org. NmPhmEnuje73xTs0Bk4Dpx5S7ZQb91y8+bUOLh/X2HOFcROxLqHwPIiF JrCJ9xj9uhlGuHf9ubOZj4H6aDNrcA==
CAA 13 2 3600 20260820000000 20260730000000 35166 grapheneos.org. dBFwqUgKiYY0B5jDSGpDkvHfB0DB03MiGZlImyi1vbU1WMFe8fd7z1xn POi/Ic/uHER503cvwfMi6e51OGuWEg==

NSEC

1 record(s)

_atproto.grapheneos.org. A NS SOA MX TXT AAAA SSHFP RRSIG NSEC DNSKEY HTTPS 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

1 record(s)

4 2 00000000000000000000000000000000000000000000000000000000 00000000

SPF

Configured

v=spf1 a:mail.grapheneos.org -all

DMARC

Configured

v=DMARC1; p=reject; adkim=s; aspf=s; fo=1; rua=mailto:dmarc-aggregate-reports@grapheneos.org; ruf=mailto:dmarc-failure-reports@grapheneos.org

DKIM

Selector default

v=DKIM1; k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAscpBvhA4SSPi2+Mdj8Ds4UB24dpeEST2hhhcm3d95rIqq0q7I7Tn39S/Mnr/ijk4a6W1V7nwMcz41JDIb1dneMJIpNlXrl79HN8wIlyxRith39VxbuohGnb5XN779uMEzJXyCPpYoffAbqSg6syzPf5VxNVRQihC62EebPjwSTlSvvT0+9oJ+Lk9Fyg00IZZt18vZJA8dJmDAuhAFvxSkzX0YzGug/N0fJXISQdMjIoSviBWzIUaLei7oDtgx0U3zhwOX3QnBQq2zxkGo4MTo5VF1dYEe3I9KC4k+Xdht3AOkXmd0AiJdMYjj2e16VOWJm3UCKPSgiY+d2Od0GMYowIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

GrapheneOS: the private and secure mobile OS

Description

GrapheneOS is a security and privacy focused mobile OS with Android app compatibility.

Final URL

https://grapheneos.org/

HTTP status

200

HTTP

Status

HTTP/2 200

Final URL

https://grapheneos.org/

Version

Server

nginx

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

Let's Encrypt

Valid from

2026-08-09T09:48:02-05:00

Valid until

2026-08-16T01:48:01-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

9 active

✓

HSTSImplemented

✓

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

121.127.40.19

117,71 ms

Cloudflare

1.1.1.1

121.127.40.19

26,73 ms

Quad9

9.9.9.9

121.127.40.19

75,71 ms

OpenDNS

208.67.222.222

91.246.30.2

40,16 ms

AdGuard

94.140.14.14

121.127.40.19

46,57 ms

IP, geolocation and ASNAssociated network information

121.127.40.19

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

mail.grapheneos.org

Port 25: Closed/unreachable - 9.8 ms - 
Port 465: Closed/unreachable - 26.4 ms - 
Port 587: Closed/unreachable - 4021.3 ms -

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