Initializing diagnostics...

⚡ Live Data: Report generated fresh from authoritative registries. 🔄 Force Refresh
🤖 AI Intelligence Summary

The domain github.com is registered with MarkMonitor Inc., first registered on 2007-10-09 and expires on 2028-10-09 (domain age: 18 years, 11 months). It resolves to IP address 20.207.73.82, hosted by Microsoft Corporation. Email delivery is handled by Microsoft 365. SPF authentication is published and valid. DMARC policy is published. Web traffic is secured with an SSL certificate issued by Sectigo Public Server Authentication CA DV E36.

Domain Overview: github.com

Domain Registration 🌐
Active 18 years, 11 months

Expires in 2 years, 13 days · DNSSEC: Unsigned

Email Security 🛡️
SPF: Pass DKIM: Detected DMARC: Quarantine

Microsoft 365 (1 MX)

SSL Certificate 🔒
Valid Chain 66 Days Left

Issuer: Sectigo Public Server Authentication CA DV E36 (2 SANs)

Server & Hosting 🖥️
200 github.com

Pune, Maharashtra, India (IN)

🌐 Domain & Registration Identity View Full Whois Details →

Domaingithub.com
Website TitleFavicon GitHub · Change is constant. GitHub keeps you ahead. · GitHub
Registered2007-10-09
Expires2028-10-09
Remaining Validity2 years, 13 days
Domain Age18 years, 11 months
RegistrarMarkMonitor Inc.
Domain Statusclient delete prohibited, client transfer prohibited, client update prohibited i
DNSSEC Delegation Unsigned · Zone not signed with DNSSEC keys i
Authoritative Nameservers ns-421.awsdns-52.com, dns4.p08.nsone.net, ns-1707.awsdns-21.co.uk, dns2.p08.nsone.net, dns1.p08.nsone.net, ns-520.awsdns-01.net, ns-1283.awsdns-32.org, dns3.p08.nsone.net i

🛡️ Email Security & Deliverability (SPF, DKIM, DMARC) View Complete Email Security Diagnostics →

Detected Email Provider 📬 Microsoft 365
Primary Mail Server (MX) github-com.mail.protection.outlook.com (Priority: 0) · 1 MX server configured i
SPF Record (Sender Policy) Pass · 8/10 DNS Lookups · Policy: ~all i
v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all
DKIM Authentication Detected · Discovered: Google Workspace (google), Microsoft 365 (Key 1) (selector1), Twilio SendGrid (Key 1) (s1), Twilio SendGrid (Key 2) (s2), Mailchimp (Key 1) (k1), Mailchimp (Key 2) (k2), Mailchimp (Key 3) (k3), Zendesk (zendesk1) i
DMARC Policy Pass (Quarantine) · Subdomain Policy: sp=reject · Reports: mailto:dmarc@github.com i
v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:dmarc@github.com; ruf=mailto:dmarc@github.com; fo=1
SMTP Port 25 Status Online (269ms) · Inbound mail server handshake response

🖥️ Web Server, Hosting & Network View Full Server & Tech Details →

Web Server Software github.com i
HTTP Status Code 200 i
Server IP (IPv4) 20.207.73.82 View Geo Details →
IPv6 Address (AAAA) Not Configured
Reverse DNS (PTR) None Detected (No PTR Record)
Server Location 📍 Pune, Maharashtra, India (IN)
ASN Network & ISP AS8075 (Microsoft Corporation)
Hosting Provider Microsoft Corporation i
Control Panel Not Detected i
Technology Stack React Google Analytics
HTTP Security Headers 5 / 6 Active (HSTS, CSP, X-Frame, X-Content, Referrer-Policy) Audit Details →
DNSBL Blacklist Reputation Clean (0/5 lists)

🔒 SSL/TLS Certificate Summary View Full SSL Certificate & Chain →

Primary Hostname (CN) github.com · Multi-Domain SAN (Covers 2 hostnames)
SSL IssuerSectigo Public Server Authentication CA DV E36
SSL Valid Till2026-11-30
Remaining Validity66 Days
Chain Status Valid Trusted Chain
Signature Algorithmecdsa-with-SHA256

Whois Ownership & Registration for github.com

📄 View Raw Registry Response ↓

Domain Information i

Domain NameGITHUB.COM
Registration Date2007-10-09 18:20:50 Z
Expiration Date2028-10-09 18:20:50 Z
Last Changed Date2026-09-07 09:22:52 Z

Domain Status i

  • client delete prohibited
  • client transfer prohibited
  • client update prohibited

Registrar Information i

NameMarkMonitor Inc.
Abuse Emailabusecomplaints@markmonitor.com

Registrant Contact i

Contact information for this role is not provided or redacted.

Administrative Contact i

Contact information for this role is not provided or redacted.

Technical Contact i

Contact information for this role is not provided or redacted.

Nameservers i

  • DNS1.P08.NSONE.NET
  • DNS2.P08.NSONE.NET
  • DNS3.P08.NSONE.NET
  • DNS4.P08.NSONE.NET
  • NS-1283.AWSDNS-32.ORG
  • NS-1707.AWSDNS-21.CO.UK
  • NS-421.AWSDNS-52.COM
  • NS-520.AWSDNS-01.NET
📄 View Raw Registry Response RDAP (Hybrid)
Domain Name: GITHUB.COM
   Registry Domain ID: 1264983250_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.markmonitor.com
   Registrar URL: http://www.markmonitor.com
   Updated Date: 2026-09-07T09:22:52Z
   Creation Date: 2007-10-09T18:20:50Z
   Registry Expiry Date: 2028-10-09T18:20:50Z
   Registrar: MarkMonitor Inc.
   Registrar IANA ID: 292
   Registrar Abuse Contact Email: abusecomplaints@markmonitor.com
   Registrar Abuse Contact Phone: +1.2086851750
   Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Name Server: DNS1.P08.NSONE.NET
   Name Server: DNS2.P08.NSONE.NET
   Name Server: DNS3.P08.NSONE.NET
   Name Server: DNS4.P08.NSONE.NET
   Name Server: NS-1283.AWSDNS-32.ORG
   Name Server: NS-1707.AWSDNS-21.CO.UK
   Name Server: NS-421.AWSDNS-52.COM
   Name Server: NS-520.AWSDNS-01.NET
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-09-24T20:15:21Z <<<

For more information on Whois status codes, please visit https://icann.org/epp

NOTICE: The expiration date displayed in this record is the date the
registrar's sponsorship of the domain name registration in the registry is
currently set to expire. This date does not necessarily reflect the expiration
date of the domain name registrant's agreement with the sponsoring
registrar.  Users may consult the sponsoring registrar's Whois database to
view the registrar's reported date of expiration for this registration.

TERMS OF USE: You are not authorized to access or query our Whois
database through the use of electronic processes that are high-volume and
automated except as reasonably necessary to register domain names or
modify existing registrations; the Data in VeriSign Global Registry
Services' ("VeriSign") Whois database is provided by VeriSign for
information purposes only, and to assist persons in obtaining information
about or related to a domain name registration record. VeriSign does not
guarantee its accuracy. By submitting a Whois query, you agree to abide
by the following terms of use: You agree that you may use this Data only
for lawful purposes and that under no circumstances will you use this Data
to: (1) allow, enable, or otherwise support the transmission of mass
unsolicited, commercial advertising or solicitations via e-mail, telephone,
or facsimile; or (2) enable high volume, automated, electronic processes
that apply to VeriSign (or its computer systems). The compilation,
repackaging, dissemination or other use of this Data is expressly
prohibited without the prior written consent of VeriSign. You agree not to
use electronic processes that are automated and high-volume to access or
query the Whois database except as reasonably necessary to register
domain names or modify existing registrations. VeriSign reserves the right
to restrict your access to the Whois database in its sole discretion to ensure
operational stability.  VeriSign may restrict or terminate your access to the
Whois database for failure to abide by these terms of use. VeriSign
reserves the right to modify these terms at any time.

The Registry database contains ONLY .COM, .NET, .EDU domains and
Registrars.

DNS Records for github.com

NS Records i

NameDataCopy
github.com. ns-421.awsdns-52.com.
github.com. dns4.p08.nsone.net.
github.com. ns-1707.awsdns-21.co.uk.
github.com. dns2.p08.nsone.net.
github.com. dns1.p08.nsone.net.
github.com. ns-520.awsdns-01.net.
github.com. ns-1283.awsdns-32.org.
github.com. dns3.p08.nsone.net.

A Records i

NameDataCopy
github.com. 20.207.73.82

AAAA Records i

No AAAA records found.

WWW Records (www.github.com) i

TypeHostValueCopy
CNAME www.github.com. github.com.
A www.github.com. github.com.
A github.com. 20.207.73.82

MX Records i

PriorityMail Server TargetCopy
0 github-com.mail.protection.outlook.com.

TXT Records i

NameValueCopy
github.com. apple-domain-verification=RyQhdzTl6Z6x8ZP4
github.com. MS=ms44452932
github.com. atlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/iqhkV4HVV7WjYlVeF8
github.com. serval-domain-verification-ydryhj=qbkiEakpwEpTvHh5fIiCqtaue
github.com. google-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks
github.com. jamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ
github.com. anthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm
github.com. docusign=087098e3-3d46-47b7-9b4e-8a23028154cd
github.com. 00Dd0000000hHE0=1TBKg000000TN2r
github.com. krisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE
github.com. cursor-domain-verification-gtfwmt=1rfLOtiTngX5QSxD5HvNKTvm3
github.com. loom-site-verification=f3787154f1154b7880e720a511ea664d
github.com. calendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP
github.com. openai-domain-verification=dv-3nh33eQwdkotMIAzLrIDVZo1
github.com. miro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa9
github.com. facebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx50
github.com. adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd7a16139b48ecf4b
github.com. stripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4912217f
github.com. MS=ms58704441
github.com. shopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o
github.com. MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805
github.com. v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all
github.com. TAILSCALE-xOzoDvFUzZr5YYVCQFuD
github.com. google-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o

Email Security (MX, SPF, DKIM, DMARC, SMTP) for github.com

Detected Email Provider
📬 Microsoft 365
✓ Active MX Routing (1 Server)

Mail Exchange (MX) Routing Records i

Priority Mail Server Hostname Copy
0 github-com.mail.protection.outlook.com

SPF Record Validation i

v=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all

Record Breakdown

PrefixMechanismValueDescription
+ v spf1 The SPF record version.
+ ip4 192.30.252.0/22 Match if the IP is in the given IPv4 range.
+ include spf.protection.outlook.com The specified domain is searched for a match.
+ include _netblocks.google.com The specified domain is searched for a match.
+ include _netblocks2.google.com The specified domain is searched for a match.
+ include mail.zendesk.com The specified domain is searched for a match.
+ include _spf.salesforce.com The specified domain is searched for a match.
+ include servers.mcsv.net The specified domain is searched for a match.
+ include mktomail.com The specified domain is searched for a match.
+ include sendgrid.net The specified domain is searched for a match.
+ ip4 62.253.227.114 Match if the IP is in the given IPv4 range.
+ ip4 166.78.69.169 Match if the IP is in the given IPv4 range.
+ ip4 166.78.69.170 Match if the IP is in the given IPv4 range.
+ ip4 166.78.71.131 Match if the IP is in the given IPv4 range.
~ all Always matches. This should be the last mechanism.

Validation Summary

SPF Record Published Pass An SPF record was found.
Multiple SPF Records Pass Only one SPF record was found.
Included Lookups Pass The number of DNS lookups (8) is within the limit of 10.
Type PTR Check Pass The deprecated PTR mechanism was not found.
Characters After ALL Pass No mechanisms were found after the "all" mechanism.

Common DKIM Selectors i

Google Workspace (google)

NameDataCopy
google._domainkey.github.com.v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAj6T5sl/RwdSqGoYWaWaFbS2UAeyPrEmd0gogocmRfS441qwR8/0KB81Hw89P0l4YiFRrXYk7NVIGfyCRHAYYZUzCkGeOysI2EjgzLFhd/NEsbRzOEc/kWkK/RO6JFq/5lOn6M9AZw/ap9tds4JG9ApgNNdSpPxp9DmvpsOSgNMVflRxQFrk3kdS4RNAPKu/OPoA7dlR/A/pECryjRoYgENtDXzdnK70HgCekems6UDzxDj61cjyoKoXtEMF/QsaHEQ1Gjfv014rDJBsubk/kT5VqHkWHa/ia68Z5r228Ety/wFfQNjXTx/J7KGZ9GkZlKED659eiJcLnWcKDSiQlhwIDAQAB

Microsoft 365 (Key 1) (selector1)

NameDataCopy
selector1._domainkey.github.com.selector1-github-com._domainkey.microsoft.onmicrosoft.com.
selector1-github-com._domainkey.microsoft.onmicrosoft.com.v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCxZC/z2cK+2s1f/ktzSDSeFzkfIHrjwtGFsfKMAYvKaXjPVNzKykpbXBkX5nB7dVUTFttda7aROr2iSrIseQ27Ui+4rUZVzgFanE8RaXhYM9n5wPKNv8GtLJk7JgcsYZ7ErgID4uW2sEYyV/dnRYw6rDzOaeRKkKELTUfJI5ebLQIDAQAB;

Twilio SendGrid (Key 1) (s1)

NameDataCopy
s1._domainkey.github.com.s1.domainkey.u51742174.wl175.sendgrid.net.
s1.domainkey.u51742174.wl175.sendgrid.net.k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyn3fMCVpb7ryIRKOGXhXVGYmsWUitNlSckqGHOwNFZgFadplOrD+Qzf1XQkP7MH/VB/97DsAAJGtEXW1Uq71Hjnfr/DuBN/YfjF/gU70qEFb7q1sdIiNtjFL2TkOpoW+X/bhhPNheW/fYwyFb6ZHFM6LTgXyuimWRHTOUP3VjZzhNVda79nt+2WZYbS4l8HdMgWpTNHjpVw5PtXESA9KBg/evSRk5fIaXIX5eRXW3baoV9yVzD8O29/IL/DiSk+yNvaO0EHL5c4yGuZJhGzvpiznb2IDVdemJK4Dqzdy5FTN/SGYZhAEr7MguG3Z314hMS2scgMsOMgB64uj/6+6UwIDAQAB

Twilio SendGrid (Key 2) (s2)

NameDataCopy
s2._domainkey.github.com.s2.domainkey.u51742174.wl175.sendgrid.net.
s2.domainkey.u51742174.wl175.sendgrid.net.k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnNt2/H6bKs99C6DAaokPp62KN9mKaD20D1PBakkObejkJvzM6Un/fKHPeI2/qXdvFFBPQE3mxMNoe+hwBVDgMgCuZEn8J6gZYI4amITure9/ny6+GaNVRoH2m6xAtWwKINkKxMayGiehkWlRVb7D23F0U8y+VDHKQFz1bnXA5jDpcDiMXy8i2lV5vEys+qt+1WGhDKCAwamT8c3xkZz8aXMJaXYCiN2HMgHDU81+mVCk4+u6mY+a98APVfFhsQ0KCq/mVZXaXTV06QrG9M5PtBHUFW7VtwXKp+AFrAut0KW1NnwaA5IGA5sc+n9dma7bSqdfGS+ixdSmJ69NwmYSHwIDAQAB

Mailchimp (Key 1) (k1)

NameDataCopy
k1._domainkey.github.com.dkim.mcsv.net.
dkim.mcsv.net.k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUoNyIR4Bn84LVcfZE20rmDeXQblIupNWBqLXM1Q+VieI/eZu/7k9/vOkLSaQQdml4Cv8lb3PcnluMVIhQIDAQAB;

Mailchimp (Key 2) (k2)

NameDataCopy
k2._domainkey.github.com.dkim2.mcsv.net.
dkim2.mcsv.net.v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA0b90ObWaLDc+i9MtTNmGeWO009hr20fIxhGg6XBT2kjZ1DTThopSe1nAndsupmcBwlQ5Q6LJ+ZAxLcujnPIxM0ZBLmgpkv8u6RfY4eFP8OLvdAW3oSuB0DyLDigQX4Sj8wBO4YIdQH6AAmBeOsidsKAFNFUCpc3vCxtBDR12U+cBg724l3sBkMQ8evnz6idnqxq9QAVYh8k4kJ+RP+6cqTdy7LjIm8xY/bQNpQIpGUAuDo2DjLcCDun9DAI4Q/3z+Q0o9QuQIDAQAB;

Mailchimp (Key 3) (k3)

NameDataCopy
k3._domainkey.github.com.dkim3.mcsv.net.
dkim3.mcsv.net.v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsYGiMSn7fsUqSvfSX40x9R1OlRtbNiCY80lHRIlcKx3XDIR7257aUx+q9CSIARdfTL6KCuLGNFx5g9TgVr6png4ajcieSQGtOehBgxnkDN8aAA5TX0FmFrcefJU0JoxLOF09EKgXxhSSHCk/ekVb0PXSboHXoZ9+EI404F1qhcwXXIgHXTaUthHTut2P6BBZhIXIgvDe/w49GchR7MRJqjNb7neEBbYHbgWuBTvvHCg7Gy6m6n9krYK+ROWq3dVvXy9plAGK3ygM+HtjIiMt7arRGMOF0WgDTz7YdN9BGpt6BvXxLnjiQcgS5T9n+cIyPZgiWzDMXNlaEEdKTEKxrwIDAQAB;

Zendesk (zendesk1)

NameDataCopy
zendesk1._domainkey.github.com.zendesk1._domainkey.zendesk.com.
zendesk1._domainkey.zendesk.com.v=DKIM1;t=s;n=core;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA9IqdLrO3Zr2/56MHt8oQVCQorP0Bl2Fz9sM2tFBnJCdB/HogQmuudEg2xAovCN2PYpw44UijIvPuBoT9vxiv6ZCBJTLJXa82r6ke5rE4tbe9NKFIrVIb9S306cJDrnKFMDb8p0dU/Su0+eUR5gVAOtCuz2L8HAzs5edvsEvD/Fb4ny1RLNSEPZkIQLfGhVxQeWANm3+1Jwb/OBVXV9k0nKpWrpgqcmO7NzroJirp014RQY7rGi60JLUubc6XhvoFQBQrtOAdVlZC5wvfS1bgpq5kQpdP7cajIqWCeqxPTeo0ZUpey2ZcaygEsZz0Z3Gs5wDzyuqd7/ADpr2jNF7ozwIDAQAB

🔍 Query Custom DKIM Selector

Live DNS Lookup

Using a custom or date-based selector (e.g. crm, newsletter, 2024)? Query its public key live on github.com:

DMARC Policy Validation i

v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:dmarc@github.com; ruf=mailto:dmarc@github.com; fo=1

Tag Breakdown

TagValueDescription
v DMARC1 Version: Must be "DMARC1".
p quarantine Policy: The action to take for failed emails (none, quarantine, reject).
sp reject Subdomain Policy: The policy for subdomains (none, quarantine, reject).
pct 100 Percentage: The percentage of emails to apply the policy to.
rua mailto:dmarc@github.com Aggregate Reports: Email address(es) to send summary reports.
ruf mailto:dmarc@github.com Forensic Reports: Email address(es) to send detailed failure reports.
fo 1 Failure Reporting Options: Defines when to send forensic reports.

Validation Summary

DMARC Record Published Pass A DMARC record was found.
Syntax Check Pass The record has a valid version tag.
Policy Enforcement Pass The policy is "p=quarantine", which sends failing emails to spam.
Aggregate Reporting Pass An address for aggregate reports was found.

Optimization Suggestions

This is a good step. Continue monitoring reports and consider moving to "p=reject" for the highest level of protection.

SMTP Connectivity Test (Port 25)

Mail ServerStatusLatencyBanner / Handshake Response
github-com.mail.protection.outlook.com Success 269ms 220 MW1PEPF0001615B.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 24 Sep 2026 20:15:43 +0000 [08DF142C95612A18]

Server IP Blacklist Check (20.207.73.82)

  • Spamhaus ZEN: Clean
  • SpamCop: Clean
  • Barracuda: Clean
  • GBUdb Truncate: Clean
  • DroneBL: Clean
  • SSL/TLS Certificate Details for github.com

    • Issuer: Sectigo Public Server Authentication CA DV E36
    • Expires In: 66 Days
    • Chain Status: Valid Chain

    🔒 SSL / TLS Protocol Support

    Excellent
    TLS protocol versions
    TLS 1.3 Enabled
    TLS 1.2 Enabled
    TLS 1.1 (deprecated) Disabled
    TLS 1.0 (deprecated) Disabled
    SSL protocol versions
    SSLv3 (deprecated) Disabled
    SSLv2 (deprecated) Disabled

    Main Leaf Certificate

    • Common Name: github.com
    • SANs: DNS:github.com, DNS:www.github.com
    • Organization: N/A
    • Validity: Sep 01, 2026 to Nov 30, 2026
    • Algorithm: ecdsa-with-SHA256
    ↓ Intermediate CA Certificate ↓
    • Common Name: Sectigo Public Server Authentication CA DV E36
    • Organization: Sectigo Limited
    • Valid Till: Mar 22, 2036
    • Issuer: Sectigo Public Server Authentication Root E46
    ↓ Intermediate CA Certificate ↓
    • Common Name: Sectigo Public Server Authentication Root E46
    • Organization: Sectigo Limited
    • Valid Till: Jan 19, 2038
    • Issuer: USERTrust ECC Certification Authority

    Website & Server Intelligence for github.com

    Website Identity

    TitleFavicon GitHub · Change is constant. GitHub keeps you ahead. · GitHub
    Meta DescriptionJoin the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

    Hosting & Server Network

    IP Address20.207.73.82
    HTTP Status200 i
    Hosting ProviderMicrosoft Corporation i
    Web Servergithub.com i
    Control Panel Not Detected i

    Technology Profile

    • React
    • Google Analytics

    HTTP Security Headers

    Strict-Transport-Security Present
    Content-Security-Policy Present
    X-Frame-Options Present
    X-Content-Type-Options Present
    Referrer-Policy Present
    Permissions-Policy Missing

    IP Details & Geolocation

    IP Address 20.207.73.82
    Reverse DNS (PTR) None Detected (No PTR Record)
    CountryIndia (IN)
    RegionMaharashtra
    CityPune
    ZIP CodeN/A
    ASN8075
    Organization / ISPMicrosoft Corporation

    Understanding Diagnostic Terms for github.com

    Domain Status (EPP)

    EPP status codes (e.g., clientTransferProhibited, active) indicating if a domain is locked against unauthorized transfer, pending renewal, or active.

    Registrar Information

    The authorized or accredited organization managing the domain reservation and authoritative registry delegation.

    Nameservers (NS)

    Authoritative servers that translate domain names into IP addresses and direct web visitors and mail traffic globally.

    A & AAAA Records

    Primary address records mapping your domain name directly to standard IPv4 (e.g., 192.0.2.1) and newer IPv6 server network addresses.

    MX (Mail Exchange)

    Priority-ranked records pointing inbound emails to designated mail server hosts (e.g., Google Workspace, Microsoft 365, Zoho).

    SPF & DMARC Security

    Email authentication standards that verify authorized sender IPs (SPF) and instruct receiving servers how to enforce security policies (DMARC).

    DKIM Signatures

    Cryptographic public key in DNS used by receiving mail servers to verify digital signatures on your emails, ensuring messages were not tampered with.

    SSL Certificate & Chain

    Establishes encrypted HTTPS connections and authenticates domain ownership via an intermediate certificate authority chain.

    Hosting Provider & ASN

    The physical server infrastructure where website files reside and the autonomous system network (ASN) routing global traffic.

    Reverse DNS (PTR)

    Pointer (PTR) records that map a server's IP address back to its canonical hostname, verifying server identity and preventing email spam rejection.

    HTTP Security Headers

    Directives like HSTS, CSP, and X-Frame-Options instructed by the server to protect browser visitors against XSS, clickjacking, and packet sniffing.

    ⚠️ Report Limitations & Data Sources

    • Data Currency: This report uses cached registry and DNS data (freshened within 4 hours) for high-speed resolution. Click "🔄 Refresh Live" to query directly against authoritative registries.
    • DNS Resolution & Propagation: Records are queried via Google Public DNS-over-HTTPS. Global DNS propagation may take up to 24–48 hours across different regional ISP resolvers during recent DNS record changes.
    • Completeness & Scope: This diagnostic tool analyzes standard authoritative records (A, AAAA, MX, NS, TXT, CNAME, SOA). It does not perform invasive brute-force subdomain scans or unauthenticated DNS zone transfers.
    • Email Deliverability & Reputation: The security analysis (SPF, DKIM, DMARC, and Port 25 SMTP handshake) reflects public DNS policies and inbound connection states. Recipient spam filters evaluate internal headers that cannot be checked from outside.
    • Reverse Proxies & CDNs: If a website is behind Cloudflare, Fastly, or another CDN/reverse proxy, the detected IP, web server software, and SSL edge certificate reflect the proxy tier.