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  1. CentralOps.net offers free and paid online tools for network diagnosis, such as traceroute, nslookup, dig, whois, ping, and more. You can also use Domain Dossier and Email Dossier to investigate domains and email addresses.

    • Domain Dossier

      About Domain Dossier. The Domain Dossier tool generates...

    • Email Dossier

      Email Dossier - Free online network tools - traceroute,...

    • icmp ping

      See if a host is reachable. domain or IP address. packets to...

    • traceroute

      traceroute - Free online network tools - traceroute,...

    • Contents
    • Entering An Address
    • Address Lookup
    • Domain Whois Record
    • Network Whois Record
    • DNS Records
    • Traceroute
    • Service Scan
    • GeneratedCaptionsTabForHeroSec

    To get started, simply enter one of the following: 1. A domain name such as www.google.com or 한글.kr 2. An IP address such as 8.8.8.8 or 2620:0:ccc::2 You can also enter other identifiers, and Domain Dossier will act on the domains or IP addresses they contain: 1. A URL such as https://www.mozilla.org/en-US/about/ 2. An email address such as postmas...

    Every Dossier begins with a DNS lookup for what you entered: 1. If you entered a domain name, it looks up IP addresses for the domain. 2. If you entered an IP address, it does a “reverse” lookup to get associated domain names. Upon success you’ll see three labeled results: canonical name 1. This is the domain name that actually has IP address recor...

    The Whois records for a domain provide information about its registrationsuch as: 1. The name of the registrant 2. Contact information 3. The date of the registration 4. The date that the registration expires 5. Authoritative DNS servers for the domain Domain Dossier displays Whois records for the longest registered domain that contains the domain ...

    The Whois records for an IP network provide information about its allocation or assignmentsuch as: 1. The range of IP addresses in the assignment 2. The name of the organization to which the addresses were assigned 3. Contact information, including abuse contacts 4. The date of the assignment Domain Dossier displays a Whois record for the IP networ...

    In this section, Domain Dossier retrieves and displays records from the DNS for several domains related to your input: 1. The entered domain (or the domain associated with the IP address you entered) 2. Registered domain of the entered domain 3. Canonical domain 4. Zone apex for the canonical domain 5. IP address domain (under in-addr.arpa or ip6.a...

    Traceroute shows the path that IP packets take from our server in Dallas, TX, USA to the IP address you entered (or the first IP address associated with the domain you entered). Each row in the table represents a hop—an IP router along the path—leading to the destination on the last row. The columns are as follows: hop 1. The hop number, with hop 1...

    If you entered an IP address or a domain that resolves to an IP address, Domain Dossier’s service scan will try contacting six common services that might be running at that address: FTP, SMTP, HTTP, POP3, IMAP, and HTTPS. For each service that responds, Domain Dossier will show you the headers or banner that it sends. The service scan helps you und...

    Domain Dossier is a tool that generates reports from public records about domain names and IP addresses. It shows owner and registrar information, DNS records, traceroute, service scan and more.

  2. Free online network utilities, including traceroute, nslookup, dig, automatic whois lookup, ping, finger, and our own Domain Dossier and Email Dossier. Some source code included.

  3. CentralOps.net offers various online tools for web development, testing, and analysis. Learn how to use, link, frame, and get more usage of the utilities with FAQs.

  4. See if a host is reachable. domain or IP address. packets to send. timeout (ms) data size (bytes) ttl (hops) ip version. auto require ipv6 require ipv4.

  5. NsLookup: Query the DNS for resource records: domain: query type

  6. Email Dossier: Investigate email addresses: email address user: anonymous [52.167.144.203]: balance: 0 units : log in | account info