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🤖 AI Intelligence Summary

The domain hackmd.hub.yt is registered with an undisclosed registrar. It resolves to IP address 141.142.217.148, hosted by University of Illinois. 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 YR1.

Domain Overview: hackmd.hub.yt

Domain Registration 🌐
Active N/A

Expires in N/A · DNSSEC: Unsigned

Email Security 🛡️
SPF: Missing DKIM: Not Detected DMARC: Missing

No MX Records Found

SSL Certificate 🔒
Valid Chain 52 Days Left

Issuer: YR1 (1 SANs)

Server & Hosting 🖥️
N/A N/A

Urbana, Illinois, United States (US)

🌐 Domain & Registration Identity View Full Whois Details →

Domainhackmd.hub.yt
Website TitleFavicon N/A
RegisteredN/A
ExpiresN/A
Remaining ValidityN/A
Domain AgeN/A
RegistrarN/A
Domain StatusN/A i
DNSSEC Delegation Unsigned · Zone not signed with DNSSEC keys i
Authoritative Nameservers N/A i

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

Detected Email Provider 📬 No MX Records Found
Primary Mail Server (MX) None i
SPF Record (Sender Policy) Missing i
DKIM Authentication Not Detected · (No common third-party selector found; custom keys may be configured) i
DMARC Policy Missing i
SMTP Port 25 Status N/A · 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) 141.142.217.148 View Geo Details →
IPv6 Address (AAAA) Not Configured
Reverse DNS (PTR) use.yt
Server Location 📍 Urbana, Illinois, United States (US)
ASN Network & ISP AS1224 (University of Illinois)
Hosting Provider University of Illinois 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) hackmd.hub.yt · Multi-Domain SAN (Covers 1 hostnames)
SSL IssuerYR1
SSL Valid Till2026-11-19
Remaining Validity52 Days
Chain Status Valid Trusted Chain
Signature AlgorithmRSA-SHA256

Whois Ownership & Registration for hackmd.hub.yt

📄 View Raw Registry Response ↓

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

    📄 View Raw Registry Response RDAP (Hybrid) 
    %%
%% This is the AFNIC Whois server.
%%
%% complete date format: YYYY-MM-DDThh:mm:ssZ
%%
%% Rights restricted by copyright.
%% See https://www.afnic.fr/en/domain-names-and-support/everything-there-is-to-know-about-domain-names/find-a-domain-name-or-a-holder-using-whois/
%%
%%

%% NOT FOUND

>>> Last update of WHOIS database: 2026-09-27T04:44:21.212701Z <<<

    DNS Records for hackmd.hub.yt

    NS Records i

    No NS records found.

    A Records i

    NameDataCopy
    hackmd.hub.yt. 141.142.217.148

    AAAA Records i

    No AAAA records found.

    WWW Records (www.hackmd.hub.yt) i

    TypeHostValueCopy
    A www.hackmd.hub.yt. 141.142.217.148

    MX Records i

    No MX records found.

    TXT Records i

    No TXT records found.

    Email Security (MX, SPF, DKIM, DMARC, SMTP) for hackmd.hub.yt

    Detected Email Provider
    📬 No MX Records Found
    ⚠ No Inbound Mail Servers

    Mail Exchange (MX) Routing Records i

    Warning: No MX records were found for hackmd.hub.yt. 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.

    🔍 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 hackmd.hub.yt:

    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 (141.142.217.148)

  • Spamhaus ZEN: Clean
  • SpamCop: Clean
  • Barracuda: Clean
  • GBUdb Truncate: Clean
  • DroneBL: Clean

    • SSL/TLS Certificate Details for hackmd.hub.yt

    • Issuer: YR1
    • Expires In: 52 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: hackmd.hub.yt
    • SANs: DNS:hackmd.hub.yt
    • Organization: N/A
    • Validity: Aug 21, 2026 to Nov 19, 2026
    • Algorithm: RSA-SHA256
    ↓ Intermediate CA Certificate ↓
    • Common Name: YR1
    • Organization: Let's Encrypt
    • Valid Till: Sep 03, 2028
    • Issuer: Root YR
    ↓ Intermediate CA Certificate ↓
    • Common Name: Root YR
    • Organization: ISRG
    • Valid Till: Sep 03, 2032
    • Issuer: ISRG Root X1

    Website & Server Intelligence for hackmd.hub.yt

    Website Identity

    TitleFavicon N/A
    Meta DescriptionN/A

    Hosting & Server Network

    IP Address141.142.217.148
    HTTP StatusN/A i
    Hosting ProviderUniversity of Illinois 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

    IP Address 141.142.217.148
    Reverse DNS (PTR) use.yt
    CountryUnited States (US)
    RegionIllinois
    CityUrbana
    ZIP CodeN/A
    ASN1224
    Organization / ISPUniversity of Illinois

    Understanding Diagnostic Terms for hackmd.hub.yt

    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.
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