IPv6 or IP version 6 is the next generation Internet protocol which will eventually replace the current protocol IPv4. IPv6 has a number of improvements and simplifications when compared to IPv4. The primary difference is that IPv6 uses 128 bit addresses as compared to the 32 bit addresses used with IPv4. This means that there are more available IP addresses using IPv6 than are available with IPv4 alone. For a very clear comparison, in IPv4 there is a total of 4,294,967,296 IP addresses. With IPv6, there is a total of 18,446,744,073,709,551,616 IP addresses in a single /64 allocation.

To also help illustrate the sheer magnitude of available IP addresses using IPv6, you can get 65536 /64 allocations out of a single /48, and then 65536 /48 allocations out of a single /32. Many Service Providers are getting /32 allocations from their Regional Internet Registry (RIR) like ARIN, APNIC, RIPE, etc.

PASSED SOA Refresh value Good! Your SOA Refresh value (10800) is within the recommended range of 1 hour (3600) to 1 day (86400).

PASSED SOA Retry value Good! Your SOA Retry value (3600) is within the recommended range of 5 minutes (300) to 4 hours (14400).

PASSED SOA Expire value Good! Your SOA Expire value (604800) is within the recommended range of 1 week (604800) to 4 weeks (2419200).

PASSED SOA Minimum TTL value Good! Your SOA Minimum TTL value (10800) is within the recommended range of less than 3 days (259200).

Reverse IP Lookup
Find all sites hosted on a given server.

Domain / IP

Reverse Whois Lookup
Find domain names owned by an individual or company.

Registrant Name or Email Address

IP History
Show historical IP addresses for a domain.

Domain (e.g. domain.com)
DNS Report
Provides a complete report on your DNS settings.

Domain (e.g. domain.com)

Reverse MX Lookup [NEW]
Find all sites that use a given mail server.

Mail server (e.g. mail.google.com)

Reverse NS Lookup
Find all sites that use a given nameserver.

Nameserver (e.g. ns1.example.com)
IP Location Finder
Find the geographic location of an IP Address.

IP

Chinese Firewall Test
Checks whether a site is accessible from China.

URL / Domain

DNS Propagation Checker

View a complete report on the DNS settings for your domain. This tool is designed to assist webmasters and system administrators diagnose DNS related issues. A number of tests are run on your DNS settings with results displayed in an easy to understand manner.

In the hosting industry, the Domain Name System (DNS) is one of the most critical pieces, right behind websites themselves. Without DNS, that website you've worked so hard on would be completely invisible. (Although it's possible to access some sites using only the IP address of their web server, this is not the case for virtual websites, which require that their hostname be included in the HTTP request header. Without a working DNS record, virtual websites are completely inaccessible.) But I've found that DNS is something that is not well understood by many website operators. The basics of creating A records (which translate a hostname to an IP address) are simple enough, but when it comes to understanding how changes are propagated in DNS, this is often something of a mystery.

• Root Hints
• Root Zone File
• Root Trust Anchor
• Top-Level Domains

all ~1500+ top level domain names

How would you know if your DNS account had been compromised? If tampered with, an attacker could point your web and email traffic to their own controlled servers, enabling them to intercept potentially confidential information from you or your customers without your knowledge.

Emergency Directive 19-01

Recently, the US Department of Homeland Security issued its first ever Emergency Directive with a list of actions to mitigate DNS account tampering, an issue they report is on the raise.
Audit DNS Records … audit public DNS records on all authoritative and secondary DNS servers to verify they resolve to the intended location.In this post, I’ll show you how to continually monitor your DNS resolution using NodePing DNS checks to ensure your important domain names are resolving to the expected IP addresses. If anyone tamplers with your DNS records, you’ll quickly receive actionable notifications from NodePing.

2 Production Nameservers in separate datacenters
250,000 queries per month (more than enough in most non-business cases)
Dynamic DNS
Full zone control: A, CNAME, MX, NS, SRV, TXT, NAPTR and IPv6 (AAAA) records
Url Forwarding: Cloaked and redirects
Email Forwarding
Support via the Community Forums

Welcome to the Hurricane Electric Free DNS Hosting portal. This tool will allow you to easily manage and maintain your
forward and reverse DNS.

The Open Beta has been expanded and now includes our IPv6 certification or tunnelbroker account holders, Colocation customers and those with Transit services from us. If you do not have an account, you can sign up for a free one here or by clicking on the button to the left. For those with existing admin.he.net accounts, please contact Support support@he.net and request a password.

Features
Dualstack: Supports queries via both IPv4 and native IPv6.
Support for A, AAAA, ALIAS, CNAME, CAA, MX, NS, TXT, SRV, SSHFP, SPF, RP, NAPTR, HINFO, LOC and PTR records.
Smart mode IPv4 and IPv6 reverse zones simplifies reverse zones.
Slave support
Multiple reverse zone formats: Standard, RFC 4183, RFC 2317, DeGroot.
Geographically diverse servers.
Sanity checking for delegation for both forward and reverse zones.
Basic syntax checking for fields.
Multiple domains per account.

Recipients

You need to own a domain name and run a DNS service to use BuddyNS.

We serve individuals, NGOs, companies, universities, and large enterprises.

Activation

1 Create a free account
1 Add domains to protect
1 Allow BuddyNS on your DNS service
1 Delegate domains to BuddyNS
1 Enjoy security and continuity