The document discusses dynamic DNS (DDNS) which allows a device's hostname and IP address to be dynamically updated when the IP address changes. It provides a list of free DDNS providers, explaining that DDNS is useful when a device is assigned a new IP address by its ISP through a lease system. The list includes over 30 free DDNS providers and details their available domains, subscription costs, and other features to help choose a provider.

1. DNS LOOKUP Everything to do with DNS, DDNS, and Free
Services
DDNS – Free Dynamic DNS Providers
November 22, 2011 admin DDNS, Dynamic Dns, 13
We maintain the #1 list of Dynamic DNS (DDNS) providers online. Dynamic DNS is a method that allows you to notify a
Domain Name Server (DNS) to change in your active DNS configuration on a device such as a router or computer of its
configured hostname and address. It is most useful when your computer or network obtains a new IP address lease
and you would like to dynamically associate a hostname with that address, without having to manually enter the change
every time. Since there are situations where an IP address can change, it helps to have a way of automatically updating
hostnames that point to the new address every time. Enter DDNS to the rescue.
We are proud to be considered the top resource online for information on dynamic dns providers. This is a gentle, not-
too-technical introduction on it, how it works, and a comprehensive list of mostly free providers. We have also provided
some dynamic dns reviews on various hosting companies to help you better decide who to choose!
If you like this list, please link to it will help others find this free list more easily!
Name URL and domain selection Subdomains? Domains?
dnsdynamic.org
(June 2011)
http://www.dnsdynamic.org/
Domains: *.user32.com, *.tftpd.net, *.wow64, etc
(12+)
Free VPN Also Available
Free Free
changeIP.com
(June 2011)
http://www.changeip.com/
Domains: *.dumb1.com, *.wikababa.com,
*.dynamic-dns.net, etc (100+)
Free $3/mo
$6/qr
$15/yr
No IP
(June 2011)
http://www.no-ip.com/
Domains: *.no-ip.com, *.servequake.com,
Free (5 domain
limit)
$15/yr
173
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2. *.sytes.net, etc. (21 domains)
afraid.org
(June 2011)
http://freedns.afraid.org/
Domains: *.afraid.org, many many others (they list
about 300. no, really.)
Free (donations
encouraged)
Free (donations
encouraged)
dyndns.com
(December
2011)
http://www.dyndns.com/
18 Subdomains Available
No Longer Free Free
(Pro: $15/yr)
zonomi.com
(June 2011)
http://www.zonomi.com/
Free $10/yr
zoneedit.com
(June 2011)
http://www.zoneedit.com/
Free Free
cjb.net
(June 2011)
http://www.cjb.net/
Domains: *.cjb.net
Free N/A
Zerigo
(June 2011)
http://www.zerigo.com/managed-dns
Free (Pro: $19/yr) Free
3322.org
(June 2011) http://www.3322.org/
Chinese Domains: *.3322.org, *.8866.net, etc
(quite a few, but seem to have trouble accessing
their sites from US)
Free N/A
oray.com
(June 2011)
http://www.oray.com/
Chinese Domains: *.xicp.net, etc (in Chinese)
Free N/A
DarSite
(June 2011)
http://www.darsite.com/eng
Domains: *.darweb.com
$100/year $100/year
Free IPv6 Tunnels
Free VoIP Providers
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3. ddns.nu
(5 Dec 2001)
http://www.ddns.nu/
Domains: *.cable.nu, *.optus.nu, *.evangelion.nu,
several others
Reg Disabled Reg Disabled
Deerfield
(2 Nov 2002) http://dns2go.deerfield.com/
Domains: *.dns2go.com, *.idleplay.net, *.dynamic-
site.net, others
$9.95/year $19.95/year
DHIS
(June 2011)
http://www.dhis.org/
Domains: *.net.dhis.org
Free N/A
DHS
(9 Dec 2001)
http://www.dhs.org/
Domains: *.dhs.org
$5 (one-time
charge?)
N/A
DNS 4 BIZ
(2 Nov 2002)
http://www.dns4biz.de/
Domains: Unknown
Free (also for-pay
options available)
$4.99/month
DNS Exit
(2 Dec 2002)
http://www.dnsexit.com/
N/A Free
DNS Made Easy
(2 Nov 2002)
http://www.dnsmadeeasy.com/
Domains: *.dnsmadeeasy.com, others
Free $4.95/year (up to
5 domains)
DNS Park
(8 Dec 2005)
http://www.dnspark.com/services/dynamicDNS.php
N/A $8.95/year
dnsd.be
(5 Dec 2001) http://www.dnsd.be/
Domains: *.dnsd.be
5 Euro per year
for the first
hostname; 4
Euro for
N/A
WordPress.org
Tags
afraid changeip DDNS ddns.us dns dynamic dns
lookup dns tools dns utilities dns w atch dynamic
dns domains dyndns noip tzo zerigo zoneedit
About Us
About

4. additional
hostnames
mapped to the
same IP.
DtDNS
(9 Dec 2001) http://www.dtdns.com/
Domains: *.darktech.org, *.dtdns.net,
*.etowns.com, others
Free $20/year
dyn.ee
(9 Dec 2001)
http://www.dyn.ee/
Domains: *.dyn.ee, *.dynserv.[com/net/org]
Free N/A
DynAccess
(5 Dec 2001)
http://www.dynaccess.de
Domains: *.dyn-access.(com/net/org/de/info/biz),
several others
5 Euro/year (or
more, depending
on
name selected)
DynamIP
(5 Dec 2001) http://www.dynamip.com/
N/A $3/month
Dynamx
(5 Dec 2001)
http://www.dyn.ro/
Domains: *.dynam.ac, *.dyn.ro, *.my-ho.st, *.irc-
chat.org
Free N/A
dyndns.dk
(9 Dec 2001)
http://dyndns.dk/
Domains: *.dyndns.dk, *.kyed.com, *.lir.dk,
*.yaboo.dk
Free $10/year
dyndsl.com
(5 Dec 2001) http://www.dyndsl.com/
Domains: *.dyndsl.com, *.45z.com, *.au2000.com
Free N/A
dynip.com
(9 Dec 2001) http://www.dynip.com/
$35.95/year and
up (based on
$159.95/year

5. Domains: *.dynip.com, others domain name
chosen)
dyns.cx
(5 Dec 2001) http://dyns.cx/
Domains: *.dyns.cx, *.dyns.net, *metadns.cx, others
Free 15 Euro/year
DynUp
(5 Dec 2001) http://www.dynup.net/
Domains: *.dynup.net
Free N/A (“coming
soon”)
Easy DNS
(5 Dec 2001) https://web.easydns.com/
N/A $19.95/year
Home PC
(5 Dec 2001) http://www.homepc.org/
Domains: *.homepc.org
Reg Disabled N/A
Hotline DNS
(5 Dec 2001) http://www.hldns.com/
Domains: *.hldns.com
Free N/A
Microtech Ltd.
(5 Dec 2001) http://www.microtech.co.gg/dns/
Domains: *.freelancedeveloper.com, *.ohflip.com,
*.microtech.co.gg, *.easydns4u.com
Free 20 UKP/year
MiniDNS
(5 Dec 2001) http://www.minidns.net/
Domains: *.minidns.net
Free (“with
quota”)
Free (“with
quota”)
myserver.org
(9 Dec 2001) http://www.myserver.org/
Domains: *.myserver.org, *.USArmyReserve.com,
*.WidescreenHD.tv, several others
Free $24.95/year
Nettica N/A $25/year, $45 for

6. Nettica
(2 Nov 2002) http://www.nettica.com/
N/A $25/year, $45 for
2 years
Open Domain
Server
(5 Dec 2001)
http://www.ods.org/
Domains: *.ods.org
Free $20/year for up to
5 domains
Planet DNS
(9 Dec 2001)
http://www.planetdns.net/
Domains: *.planetdns.[net/org/biz/ca]
$19.95/year $49.95/year
PowerDNS
(5 Dec 2001)
http://www.powerdns.com/
N/A Free for up to five
domains, per
email from site
admin.
Prout
(2 Nov 2002) http://www.prout.be/dns/
Domains: *.prout.be, *.dyn.prout.be
Free N/A
Sitelutions
(2 Nov 2002) http://www.sitelutions.com/info/sldns
N/A Free
Static Cling
(5 Dec 2001)
http://www.staticcling.org/
Domains: *.staticcling.org
Free N/A
That IP
(2 Nov 2002)
http://www.thatip.com/
Domains: *.thatip.com
$10 for up to 5
names
$10 for up to 5
names
Turnkey Hub
(June 2011)
https://hub.turnkeylinux.org/
Domains *. TKLAPP.com
Cloud Services with Turnkey Hub, but pricing based
on Amazon EC3
Free Free
TZO Internet
http://www.tzo.com/
$24.95/year $59.95/year

7. (5 Dec 2001) http://www.tzo.com/
Domains: *.tzo.com, *.tzo.net, *.tzo.org, *.tzo.cc
$99.95/2 years
whyI
(9 Dec 2001) http://www.whyi.org/
Domains:
*.yi.org,*.whyi.org,*.weedns.com,*.b0b.org
Free N/A
Xname
(June 2011) http://www.xname.org/
Domains: *.xname.org
Free N/A
Widge DNS
(3 Dec 2002) http://dns.widge.net/
N/A Free
World Wide
DNS
(5 Dec 2001)
http://www.worldwidedns.net/
N/A $39/year
Can there be only one such feed?
Of course not. Here’s a few other lists of Dynamic DNS Providers and review sites:
DMOZ provides a nice big list.
Yes, it’s yet another list, on noeld.com.
Mintdns has one here http://www.dyndnsservices.com/tech.htm
DNS? What’s that?
DNS, the Domain Name Service, is responsible for helping the Internet to function as it does today. The Internet is
divided into literally
millions of domains; each one has its own name. DNS helps to translate that name into an actual location (IP

8. address).
To a human, names like that (or ibm.com, or yahoo.com, or any of the
other four million domain names registered) make perfect sense.
Dotted Quads?
IP addresses consist of four numbers, each between 0
and 255. More or less. (Some blocks of numbers are reserved for a
variety of special purposes.)
But not to the computer.
The computer doesn’t have a clue. Computers work with numbers.
Computers use IP addresses (“dotted quad” numbers like
10.20.30.255) to talk with each other on the Internet.
DNS is the middleman, translating domain names into numbers (and,
occasionally, the other way around).
Great. But why “dynamic DNS?”
Glad you asked. Let’s review!
Got Numbers?
In theory, there are 232
(about 4.29e9, 4
billion or so) possible
numeric addresses for the Internet in IPv4. In practice, though, many of them were
allocated in an inefficient manner a long time ago, in a way that can’t
easily be undone today. Some groups, like MIT, were given literally millions of
addresses, more than they can ever use, but it’s not really practical for
them to give them back now. (IP routing is an ugly thing indeed. Ask
anyone who has to deal with CIDR; earplugs to muffle the blood-curdling
screams of terror are optional.)
Over the next few years, IPv6 will be phased in, increasing
the number of addresses to 2128
(3.40e38, give or take), enough
for everyone and all their major appliances to have an address. But until
then…

9. There’s only so many numbers out there, at least as far as the computer
is concerned. (Basically, each of the four parts in the “dotted quad”
address can only be between 0 and 255.) Silly technical limitations eat up
a lot of those addresses; historical design decisions eat up some more;
and of course a LOT of them are already in use.
This means that Internet IP addresses are a finite, scarce resource,
and have to be treated somewhat carefully.
Suppose you have a normal, $20 per month, Internet dialup account from
“Some Local ISP, Inc.” They have three thousand customers, but
it’s rare that all of them are online at the same time. (In fact, if they
follow industry practice, they probably only have 500 or so phone lines
anyway.) So that ISP may only have 600 or 700 IP addresses — enough to
provide one for each phone line, a few for internal use, a few for future
growth, but nowhere near one for each of those 3000 customers.
Or maybe you have a cable modem, though “Big CableCo Inc.”
Whenever your cable modem goes online (when you first plug it in and turn
it on), it broadcasts a request for an open address, and some computer in
their office eventually answers. Cable modem addresses are usually
assigned with “leases,” which work just like the lease on an apartment -
you’re guaranteed to have that address for a certain time, but after that
all bets are off. Your landlord (the cable company) might evict you,
forcing you to move (get a new IP address) at the end of the lease. (These
‘leases’ usually only last for a few days, and sometimes only a few
hours.) At the end of the lease, you may be able to negotiate a new lease,
but you can’t be sure of it.
So not everyone can have their own IP address. Your ISP, cable company,
or whoever, might let you have a dedicated IP, but they’ll probably charge
you extra for it. It’s more likely, though, that they can’t or won’t help
you…
Imagine if the phone company changed your number twice a day — people
would have a hard time calling you.
Fortunately, most home users don’t need to worry about all this
“dynamic DNS” stuff. If you just want to get online, check your email,
look at a few Web sites, maybe get in a quick game of
Unreal Tournament 2003,

10. your specific address doesn’t matter. You’ll get a fresh address every
time you dial in, that’s all yours for as long as you stay connected, and
since other people aren’t trying to connect to your computer, you’re all
set.
If you want to run a BBS, or Web server, or any number of other
services, on your home computer, though, having your IP address change all
the time is a real problem.
Enter DDNS, otherwise known as Dynamic DNS services or Free DNS. They act like old-style phone operators:
other users call the operator, and ask to speak to you, and magic happens.
Every time your computer comes online, you tell the DDNS server what your
current address is. Other users, through the magic of DNS, will be sent to
the right place.
Sounds neat. Tell me more about how DNS works.
It gets a bit more technical here. If you just want to run a
part-time Web server, or Shoutcast server, or something like that, you
probably don’t need to know most of this. But it may come in handy, and
it’s (I hope) interesting anyway. If you want to run a BBS, you’ll almost
certainly need to read on.
Sidebar: When aren’t DNS mappings one-to-one?
Really big Internet services, like Yahoo!, can’t possibly
be run on one computer. Many different numbers point to “www.yahoo.com.” Behind the scenes,
most of Yahoo’s services are handled by big databases anyway.
It goes the other way too. It’s possible for one computer
(thus, one number) to host many Web sites.
The most interesting, and useful, types of DNS records are A
records, MX records, and CNAME records.
“A” records specify Addresses. An A record usually matches a
single name to a single number. For instance, as I write this, it matches

11. the domain name “technopagan.org” to the number
“24.217.41.120″. (Don’t use that number for anything; I have a
dynamically-assigned address too.) This mapping isn’t always one-to-one,
but for this discussion let’s pretend they are.
“MX” stands for Mail eXchanger. MX records specify other
computers that handle mail for a given domain. To continue the phone
analogy: My primary MX is my home phone. If you can’t reach me there,
though, you might try my pager (a secondary MX) or my cell phone (another
secondary). If a domain doesn’t have an MX listed, the address from the A
record will be used.
CNAME stands for Canonical Name. It specifies aliases – other names
that a computer answers to. Suppose you want to look like a big company,
running a Web server, FTP server, news, IRC, and other services too. But
you can’t afford to buy a dozen computers to run them all. So you set up a
number of CNAMEs for your one computer: www.yourdomain.net,
ftp.yourdomain.net, irc.yourdomain.net, bbs.yourdomain.net, and others.
That one computer could run all those servers at once.
Sidebar: TTL
“TTL” stands for “Time To Live.” It’s
one of the parts of a DNS record, and it basically says how long a given
record is valid before your computer should double-check to make sure the
computer hasn’t “moved.” Most computers don’t move often, so their DNS
entries “live” for hours or days. The secret to Dynamic DNS is
that its entries usually live for five minutes or less.
There are other DNS records, from the never used WKS, to PTR and HINFO,
to the dreaded “in-addr.arpa” record. But they are beyond the
scope of this document. For a good primer to DNS in general, see the Linux
DNS HOWTO at http://www.ibiblio.org/pub/Linux/docs/howto/DNS-HOWTO.
If you’re interested in running a DDNS service of your own (you brave
soul, you), there are a couple things to do: Either write the software
yourself (as the people at Dynup.net
have done), or get a ready-made package from someplace (like CheapNet).
I don’t want this to become a list of “dynamic DNS software providers,”
but here’s a (partial, incomplete) list of pre-made packages:

12. GNUdip
GNUdip2 (no, I don’t
know what the distinctions are)
A DDNS server for Windows
2000
Okay, I’m sold. From whom can I get Dynamic DNS service?
Above you will find a list of providers that we are doing our best to keep up to date. (The date at the top of this document
shows you when I last
checked all these sites; then, at least, they all appeared to be in
business and taking new customers. If things have changed since then and you would like to leave a dynamic dns
review, let
me know by leaving a comment below.
Sidebar: TOS
“TOS” stands for “Terms Of Service.”
When you signed up with your ISP, or DSL or cable modem provider, you
probably had to sign (or click “I Agree”) to one of these. Usually, they
say you cannot run a Web server, or any other kind of server, off
your home computer. Be sure you check this before you start publicizing
your new Web site, or else you might not have any Internet access at all.
But first, let me explain the table.
quot;Subdomains” means you get a sub-domain of a name the company
already owns. If your computer is named fred, and you buy this kind of
service from “Some Big ISP,” at somebigisp.net, your domain name
will be fred.somebigisp.net.
“Domains” means you’ve purchased your own Internet domain
name. This will be something like “yourdomain.com”. There are
literally hundreds of places that can sell dotcom names and others as
well. I’ve gotten good prices and good results, both personally and
professionally, from GoDaddy. The
name is lame and cheesy, but for domain names starting at about seven
bucks a year, the price is hard to beat.

13. Free IPv6 Tunnels Dynamic DNS Hosts & Domains
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afraid, changeip, DDNS, ddns.us, dns dynamic, dyndns, noip, tzo, zerigo, zoneedit
The inevitable “?” means that the Web site in
question doesn’t list the information, or that it’s sufficiently confusing
that I gave up looking for it. (Usually, it means that you can only get
the information if you sign up. I don’t want to pollute all these
different databases by creating accounts I’ll never use, and I don’t even
know what I’d do with 100 extra domain names.
And now, the standard disclaimers: I don’t work for anyone on this
page. I am a happy customer of a couple of these companies; if you know
your way around DNS tools, you’ll be able to figure out which ones. Though
I try to keep this page up-to-date, I don’t guarantee that anything on
here is accurate. Including this disclaimer.
This list was originally created and provided by:
David E. Smith http://www.technopagan.org/dynamic/
In order to help keep this list fresh, feel free to register and post a comment with your suggestions.
13 thoughts on “DDNS – Free Dynamic DNS Providers”
admin says:
June 23, 2011 at 4:41 am
Try leaving a comment here!
patrik_fm says:
August 26, 2011 at 8:18 pm
.. how can i add my ddns server? and will it be in routers than? what i have to do ? can you help me?

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dyndnss says:
May 31, 2012 at 12:36 am
A new free DynDNS Updater Service “Made in Germany” is DynDNS You have 3 DynDNS Accounts for free and
Premium Users have 25 Accounts and URL-Forwarding.
ddnsPT says:
July 13, 2012 at 2:06 pm
Hi, here are my 2¢
For spanish(Español) users:
http://www.ddns.mx
For portuguese(Português):
http://www.ddns.pt
They offer free and paid services also with DNSSEC for free and a high customizable API.
HAL-9000 says:
July 22, 2012 at 4:11 pm
To advise is also the http://www.szcloud.de
gslbme says:
November 20, 2012 at 1:58 pm
Another new dns service to achieve smart balancing is at http://www.gslb.me
boomshadow says:
January 3, 2013 at 6:59 am
I’ve been using your list quite a bit to find a new provider once DynDNS stopped offering free accounts. I still

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have my 1 free hostname with them as it was being auto-updated by a home server. But if it ever stops getting
updated after 30 days time, they will delete it.
After playing around with a few providers, I think No-IP.com is my favorite. Pretty well developed system, easy to
use, and still has free accounts. I just hope they don’t turn around and do what DynDNS did and take away
those free accounts.
I know a lot of routers and other IP devices came specifically programmed to use DynDNS’s free accounts, but
then they got screwed over. For those users that still want the DynDNS free account, you can still get it. I wrote
up a guide here:
http://boomshadow.net/tech/how-to-still-get-a-free-dyndns-account/
chacaman says:
January 12, 2013 at 8:28 pm
chacaman says:
January 12, 2013 at 8:30 pm
sorry yo can have 15 A records on http://www.nds.com.do or ndsrd.com.do user cpanel and more i like this
service
chacaman says:
April 26, 2013 at 11:58 am
this service have clients for windows and linux
Mark_edenberg says:
April 10, 2013 at 5:48 am
I also use http://www.devresan.com/ddns/addns.html for a year. It’s free and they have one-step signup form
and auto-activation service. Their refresh period is 1 minutes but you can’t change this to 1 hour or more if it is
neccessarry.

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stevenharper says:
April 21, 2013 at 10:14 am
New provider duckdns.org free uses openid for accounts
sburina says:
May 31, 2013 at 3:41 pm
Yet another new free DDNS provider: Burina.NET DDNS.
The service is totally free, and it will remain such as long as the company exists. Every account gets the default
hostname “username.dyn.rs”, and a possibility to create up to 4 additional hostnames under this default:
“something.username.dyn.rs”.
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