CheckIP Script

If you need an easy way to detect your public ip address, we have a solution.
We provide several url's to detect your public ip.
myonlineportal.net/checkip This one will always show you your ip your are currently using, can be IPv4 or IPv6.
ipv4.myonlineportal.net/checkip This one will only use IPv4. If you are behind a Carrier Grade Nat this can be not your public IP.
ipv6.myonlineportal.net/checkip This one will only use IPv6 if available. Otherwise you will not reach this url.

Lets Encrypt Wildcard SSL Certificates with acme-challenge

If you enable wildcard for your domain, you will also see a textfield for entries for _acme-challenge txt records. These records can be set during the certbot creation or renewal of the certificate.
More details are available here -> Lets Encrypt DNS-01 challenge

Separate Credentials

This decouples the credentials from your account and the updates for the DynDNS domain. On the one hand, you can use different passwords for each domain if you operate several domains. Secondly, your account is not compromised if the password for the domain falls into the wrong hands.

Fritz!Box (Router)
OpenWrt (Router)
ddclient (Linux, Mac)
ddclient (Windows)
inadyn (Linux, Mac)
DynDNS Service (Windows)

https://myonlineportal.net/updateddns?hostname=HOSTNAME&ip=IPV_4

Request Parameters - Header

Header	Required	Description
Authorization	depends	HTTP Basic authorization. A base64 encoded string of a username and password separated by a colon. Not needed if username and password are query parameters

Request Parameters - Query

Parameter	Required	Description
hostname	yes	The dyndns hostname you like to update
ip	recommended	The new ip to update for the hostname, can be an IPv4 or an IPv6 address or both with comma separated. Not required but recommended, if missing we will determine automatically your ip and update to the ip where the request was sended from.
myip		An alias for ip
ip6	no	The new IPv6 address. Can be used in parallel with ip to update IPv4 and IPv6 together.
username	depends	Your username if you don't use Authorization header
password	depends	Your password if you don't use Authorization header

Responses

Satus	Code	Description
badauth	401	Invalid credentials, check username and password
nohost - Hostname missing	400	The hostname parameter is missing.
nohost - domain not found	404	hostname not found or not match to the user owned hostnames.
good IPv4_Address IPv6_Address	200	Update successfull for the given addresses.
nochg	200	IP's already set to the requested values, nothing changed.

Curl - Examples

Authorization header and hostname and ip as parameter

curl -u username:password https://myonlineportal.net/updateddns?hostname=example.myonlineportal.net&ip=10.10.10.10

Parallel update for IPv4 and IPv6 addresses

curl https://myonlineportal.net/updateddns?hostname=example.myonlineportal.net&ip=10.10.10.10?ip6=1ce:1ce:babe?username=USERNAME?password=PASSWORD

Compatiblity Issues

For compatiblity issues the update url will also work in following format

https://myonlineportal.net/dyndnsupdate.htm?hostname=...
https://myonlineportal.net/dyndnsupdate?hostname=...
https://myonlineportal.net/updatedyndns?hostname=...
https://myonlineportal.net/nic/update?hostname=...


https://myonlineportal.net/set-acme?hostname=HOSTNAME&txt=

Request Parameters - Header

Header	Required	Description
Authorization	depends	HTTP Basic authorization. A base64 encoded string of a username and password separated by a colon. Not needed if username and password are query parameters

Request Parameters - Query

Parameter	Required	Description
hostname	yes	The dyndns hostname where you like to set an acme txt record
txt	yes	The acme value you have to set, this can also be empty to clean up the txt record

Responses

Satus	Code	Description
badauth	401	Invalid credentials, check username and password
nohost - Hostname missing	400	The hostname parameter is missing.
nohost - domain not found	404	hostname not found or not match to the user owned hostnames.
set to	200	Update successfull for the given txt record.

Curl - Examples

Set an acme txt record

curl -u username:password https://myonlineportal.net/set-acme?hostname=example.myonlineportal.net&txt=sometxtvalue

Delete an acme txt record

curl -u username:password https://myonlineportal.net/set-acme?hostname=example.myonlineportal.net&txt=