Initializing diagnostics...

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

The domain stackdns.com is registered with Tucows Domains Inc., first registered on 2016-01-19 and expires on 2028-01-19 (domain age: 10 years, 8 months). Email delivery is handled by Microsoft 365. SPF authentication is published and valid. DMARC protection is missing or unconfigured.

Domain Overview: stackdns.com

Domain Registration 🌐
Active 10 years, 8 months

Expires in 1 year, 3 months, 23 days · DNSSEC: Unsigned

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

Microsoft 365 (1 MX)

SSL Certificate 🔒
Untrusted N/A Days Left

Issuer: N/A

Server & Hosting 🖥️
N/A N/A

N/A

🌐 Domain & Registration Identity View Full Whois Details →

Domainstackdns.com
Website TitleFavicon N/A
Registered2016-01-19
Expires2028-01-19
Remaining Validity1 year, 3 months, 23 days
Domain Age10 years, 8 months
RegistrarTucows Domains Inc.
Domain Statusclient transfer prohibited, client update prohibited i
DNSSEC Delegation Unsigned · Zone not signed with DNSSEC keys i
Authoritative Nameservers ns3.stackdns.com, ns2.stackdns.com, ns4.stackdns.com, ns1.stackdns.com i

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

Detected Email Provider 📬 Microsoft 365
Primary Mail Server (MX) stackdns-com.mail.protection.outlook.com (Priority: 0) · 1 MX server configured i
SPF Record (Sender Policy) Pass · 1/10 DNS Lookups · Policy: -all i
v=spf1 include:spf.protection.outlook.com -all
DKIM Authentication Detected · Discovered: Key 1 (Generic) (key1), Key 2 (Generic) (key2) i
DMARC Policy Missing i
SMTP Port 25 Status Online (395ms) · Inbound mail server handshake response

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

Web Server Software N/A i
HTTP Status Code N/A i
Server IP (IPv4) N/A View Geo Details →
IPv6 Address (AAAA) Not Configured
Reverse DNS (PTR) None Detected (No PTR Record)
Server Location 📍 N/A
ASN Network & ISP N/A
Hosting Provider N/A i
Control Panel Not Detected i
Technology Stack No third-party framework or CMS fingerprints detected
HTTP Security Headers None Detected (Missing HSTS / CSP) Audit Details →
DNSBL Blacklist Reputation Clean (0/5 lists)

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

Primary Hostname (CN) N/A
SSL IssuerN/A
SSL Valid TillN/A
Remaining ValidityN/A Days
Chain Status Invalid / Untrusted
Signature AlgorithmN/A

Whois Ownership & Registration for stackdns.com

📄 View Raw Registry Response ↓

Domain Information i

Domain NameSTACKDNS.COM
Registration Date2016-01-19 12:26:58 Z
Expiration Date2028-01-19 12:26:58 Z
Last Changed Date2018-02-22 11:06:00 Z

Domain Status i

  • client transfer prohibited
  • client update prohibited

Registrar Information i

NameTucows Domains Inc.
Abuse Emaildomainabuse@tucows.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

  • NS1.STACKDNS.COM
  • NS2.STACKDNS.COM
  • NS3.STACKDNS.COM
  • NS4.STACKDNS.COM
📄 View Raw Registry Response RDAP (Hybrid)
Domain Name: STACKDNS.COM
   Registry Domain ID: 1995591708_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.tucows.com
   Registrar URL: http://www.tucows.com
   Updated Date: 2018-02-22T11:06:00Z
   Creation Date: 2016-01-19T12:26:58Z
   Registry Expiry Date: 2028-01-19T12:26:58Z
   Registrar: Tucows Domains Inc.
   Registrar IANA ID: 69
   Registrar Abuse Contact Email: domainabuse@tucows.com
   Registrar Abuse Contact Phone: +1.4165350123
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
   Name Server: NS1.STACKDNS.COM
   Name Server: NS2.STACKDNS.COM
   Name Server: NS3.STACKDNS.COM
   Name Server: NS4.STACKDNS.COM
   DNSSEC: unsigned
   URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2026-09-25T20:57:20Z <<<

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,
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use electronic processes that are automated and high-volume to access or
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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 stackdns.com

NS Records i

NameDataCopy
stackdns.com. ns3.stackdns.com.
stackdns.com. ns2.stackdns.com.
stackdns.com. ns4.stackdns.com.
stackdns.com. ns1.stackdns.com.

A Records i

No A records found.

AAAA Records i

No AAAA records found.

WWW Records (www.stackdns.com) i

No CNAME or A records found for the 'www' subdomain.

MX Records i

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

TXT Records i

NameValueCopy
stackdns.com. MS=ms82768229
stackdns.com. v=spf1 include:spf.protection.outlook.com -all

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

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

Mail Exchange (MX) Routing Records i

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

SPF Record Validation i

v=spf1 include:spf.protection.outlook.com -all

Record Breakdown

PrefixMechanismValueDescription
+ v spf1 The SPF record version.
+ include spf.protection.outlook.com The specified domain is searched for a match.
- 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 (1) 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

Key 1 (Generic) (key1)

NameDataCopy
key1._domainkey.stackdns.com.key1.stackdns.com.dkim.hostedemail.link.
key1.stackdns.com.dkim.hostedemail.link.v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAx28gk8Wbqu6TOhXGuQQ8vpwjFDFRnL3MlfuGxtKgff0nCC5U8jtVrcb4aiWBmlnIxKm41nnYJIgGHLFbuZQGFw6NMgKiojtplRbxNk5hLyyesdGcPO51Fv1g2gQNZZU6BUYmdEeppzVBm3aKvpm8Ej7ALuHlvUUXZSfwO3ERbKaSBz076sruRoDDiVNs+NDWYPeHg+iBVgk043OxfuRrBbk3IGILC1Svzw4/bMYFq5uPxGPqXG3iO1vazC86AQzXHAlk2sqWqTekcsfDrs7QsaDZDP4uwMN57dbH/GzAQ8wBEpRDeUnCNL08iTTX8Bdacas9co4ScAAPuqZjw6gZDwIDAQAB

Key 2 (Generic) (key2)

NameDataCopy
key2._domainkey.stackdns.com.key2.stackdns.com.dkim.hostedemail.link.
key2.stackdns.com.dkim.hostedemail.link.v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2rmOP2X1bJTgFrNM85Xv+EBCHNMSwss8l1zH0zr72zpJ+GjVql0N+hRRtmWzc6cndzShXdTlhKiufYoIKskYzyGHHflRuoMs7GcdQZOHscjvYZ9VeSSpI3aiZKiHGt4uJwhYvf2fTdIwgk1ZLjHJW3TFkRzVnqDZuYcTzkz3MrIw14Sa2HeZRBxu6zB9NyAgfo5FIZA4RljJ6VoCdjNkUuXSTEIDb569rRzy6XXASDZU/cf+1irv2ZJSH1DrfqTAa76N3AHrpE06CVs8wqZcm9xhRXhwidlwZWmWJqq7Rz4Zwi7ZyQWmS7gXJuZeJOclZ61Bcm2/l3611ITJmUeH3QIDAQAB

🔍 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 stackdns.com:

DMARC Policy Validation i

No DMARC record found to validate.

Validation Summary

DMARC Record Published Fail No DMARC record was found.

Optimization Suggestions

A DMARC record is essential for email security. It tells receiving servers what to do with emails that fail SPF and DKIM checks, protecting your domain from spoofing.

SMTP Connectivity Test (Port 25)

Mail ServerStatusLatencyBanner / Handshake Response
stackdns-com.mail.protection.outlook.com Success 395ms 220 WA1PEPF00009B3B.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Fri, 25 Sep 2026 20:57:36 +0000 [08DF1A03537FF4B5]

Server IP Blacklist Check ()

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

    Could not connect to get SSL certificate.

    Website & Server Intelligence for stackdns.com

    Website Identity

    TitleFavicon N/A
    Meta DescriptionN/A

    Hosting & Server Network

    IP AddressN/A
    HTTP StatusN/A i
    Hosting ProviderN/A i
    Web ServerN/A i
    Control Panel Not Detected i

    Technology Profile

    No specific third-party frameworks or CMS fingerprints detected.

    HTTP Security Headers

    Could not fetch HTTP headers.

    IP Details & Geolocation

    Could not retrieve detailed IP information.

    Understanding Diagnostic Terms for stackdns.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.