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๐Ÿค– AI Intelligence Summary

The domain md.sigma2.no is registered with an undisclosed registrar. It resolves to IP address 217.144.72.9, hosted by ITsjefen AS. Email delivery is handled by No MX Records Found. No valid SPF record was detected. DMARC protection is missing or unconfigured. Web traffic is secured with an SSL certificate issued by YE2.

Domain Overview: md.sigma2.no

Domain Registration ๐ŸŒ
Active N/A

Expires in N/A ยท DNSSEC: Unsigned

Email Security ๐Ÿ›ก๏ธ
SPF: Missing DKIM: Not Detected DMARC: Missing

No MX Records Found

SSL Certificate ๐Ÿ”’
Valid Chain 43 Days Left

Issuer: YE2 (1 SANs)

Server & Hosting ๐Ÿ–ฅ๏ธ
200 nginx/1.24.0 (Ubuntu)

Oslo, Norway (NO)

๐ŸŒ Domain & Registration Identity View Full Whois Details โ†’

Domainmd.sigma2.no
Website TitleFavicon HedgeDoc - Ideas grow better together
RegisteredN/A
ExpiresN/A
Remaining ValidityN/A
Domain AgeN/A
RegistrarN/A
Domain StatusN/A i
DNSSEC Delegation Unsigned ยท Zone not signed with DNSSEC keys i
Authoritative Nameservers N/A i

๐Ÿ›ก๏ธ Email Security & Deliverability (SPF, DKIM, DMARC) View Complete Email Security Diagnostics โ†’

Detected Email Provider ๐Ÿ“ฌ No MX Records Found
Primary Mail Server (MX) None i
SPF Record (Sender Policy) Missing i
DKIM Authentication Not Detected ยท (No common third-party selector found; custom keys may be configured) i
DMARC Policy Missing i
SMTP Port 25 Status N/A ยท Inbound mail server handshake response

๐Ÿ–ฅ๏ธ Web Server, Hosting & Network View Full Server & Tech Details โ†’

Web Server Software nginx/1.24.0 (Ubuntu) i
HTTP Status Code 200 i
Server IP (IPv4) 217.144.72.9 View Geo Details โ†’
IPv6 Address (AAAA) 2a02:2c8:c005:13::11
Reverse DNS (PTR) 217144072009.vdc-ndc.trd.no.as44381.net
Server Location ๐Ÿ“ Oslo, Norway (NO)
ASN Network & ISP AS44381 (ITsjefen AS)
Hosting Provider ITsjefen AS i
Control Panel Not Detected i
Technology Stack Nginx Express.js (Node.js) Bootstrap Google Analytics
HTTP Security Headers 3 / 6 Active (HSTS, CSP, Referrer-Policy) Audit Details โ†’
DNSBL Blacklist Reputation Clean (0/5 lists)

๐Ÿ”’ SSL/TLS Certificate Summary View Full SSL Certificate & Chain โ†’

Primary Hostname (CN) md.sigma2.no ยท Multi-Domain SAN (Covers 1 hostnames)
SSL IssuerYE2
SSL Valid Till2026-11-25
Remaining Validity43 Days
Chain Status Valid Trusted Chain
Signature Algorithmecdsa-with-SHA384

Whois Ownership & Registration for md.sigma2.no

๐Ÿ“„ View Raw Registry Response โ†“

Domain Information i

Domain NameN/A

Registrar Information i

NameN/A

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

    ๐Ÿ“„ View Raw Registry Response RDAP (Hybrid)
    % By looking up information in the domain registration directory
    % service, you confirm that you accept the terms and conditions of the
    % service:
    % https://www.norid.no/en/domeneoppslag/vilkar/
    %
    % Norid AS holds the copyright to the lookup service, content,
    % layout and the underlying collections of information used in the
    % service (cf. the Act on Intellectual Property of May 2, 1961, No.
    % 2). Any commercial use of information from the service, including
    % targeted marketing, is prohibited. Using information from the domain
    % registration directory service in violation of the terms and
    % conditions may result in legal prosecution.
    %
    % The whois service at port 43 is intended to contribute to resolving
    % technical problems where individual domains threaten the
    % functionality, security and stability of other domains or the
    % internet as an infrastructure. It does not give any information
    % about who the holder of a domain is. To find information about a
    % domain holder, please visit our website:
    % https://www.norid.no/en/domeneoppslag/
    
    % No match

    DNS Records for md.sigma2.no

    NS Records i

    No NS records found.

    A Records i

    NameDataCopy
    md.sigma2.no. 217.144.72.9

    AAAA Records i

    NameDataCopy
    md.sigma2.no. 2a02:2c8:c005:13::11

    WWW Records (www.md.sigma2.no) i

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

    MX Records i

    No MX records found.

    TXT Records i

    No TXT records found.

    Email Security (MX, SPF, DKIM, DMARC, SMTP) for md.sigma2.no

    Detected Email Provider
    ๐Ÿ“ฌ No MX Records Found
    โš  No Inbound Mail Servers

    Mail Exchange (MX) Routing Records i

    Warning: No MX records were found for md.sigma2.no. This domain cannot receive emails.

    SPF Record Validation i

    No SPF record found to validate.

    Common DKIM Selectors i

    No common third-party DKIM selectors found. Custom selectors may be configured.

    ๐Ÿ” 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 md.sigma2.no:

    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.

    Server IP Blacklist Check (217.144.72.9)

  • Spamhaus ZEN: Clean
  • SpamCop: Clean
  • Barracuda: Clean
  • GBUdb Truncate: Clean
  • DroneBL: Clean
  • SSL/TLS Certificate Details for md.sigma2.no

    • Issuer: YE2
    • Expires In: 43 Days
    • Chain Status: Valid Chain

    ๐Ÿ”’ 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: md.sigma2.no
    • SANs: DNS:md.sigma2.no
    • Organization: N/A
    • Validity: Aug 27, 2026 to Nov 25, 2026
    • Algorithm: ecdsa-with-SHA384
    โ†“ Intermediate CA Certificate โ†“
    • Common Name: YE2
    • Organization: Let's Encrypt
    • Valid Till: Sep 03, 2028
    • Issuer: Root YE
    โ†“ Intermediate CA Certificate โ†“
    • Common Name: Root YE
    • Organization: ISRG
    • Valid Till: Sep 03, 2032
    • Issuer: ISRG Root X2
    โ†“ Intermediate CA Certificate โ†“
    • Common Name: ISRG Root X2
    • Organization: Internet Security Research Group
    • Valid Till: Sep 03, 2032
    • Issuer: ISRG Root X1

    Website & Server Intelligence for md.sigma2.no

    Website Identity

    TitleFavicon HedgeDoc - Ideas grow better together
    Meta DescriptionIdeas grow better together

    Hosting & Server Network

    IP Address217.144.72.9
    HTTP Status200 i
    Hosting ProviderITsjefen AS i
    Web Servernginx/1.24.0 (Ubuntu) i
    Control Panel Not Detected i

    Technology Profile

    • Nginx
    • Express.js (Node.js)
    • Bootstrap
    • Google Analytics

    HTTP Security Headers

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

    IP Details & Geolocation

    IP Address 217.144.72.9
    Reverse DNS (PTR) 217144072009.vdc-ndc.trd.no.as44381.net
    CountryNorway (NO)
    RegionOslo
    CityOslo
    ZIP CodeN/A
    ASN44381
    Organization / ISPITsjefen AS

    Understanding Diagnostic Terms for md.sigma2.no

    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.

    โš ๏ธ Report Limitations & Data Sources

    • Data Currency: This report uses cached registry and DNS data (freshened within 4 hours) for high-speed resolution. Click "๐Ÿ”„ 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 24โ€“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.