FAQs

What types of DNS records does Cloud DNS support?

Cloud DNS supports the following record types: A, AAAA, CNAME, ALIAS, MX, NS, SOA, SRV, TXT, CAA, SSHFP, TLSA, SMIMEA, DS, HTTPS, SVCB, OPENPGPKEY, CERT, URI, RP, and LOC.

The following is a brief explanation about the most common record types:

Record Types	Description
A	The IPv4 address associated with a zone name.
AAAA	The IPv6 address associated with a zone name.
MX	The mail exchange servers for a zone name.
CNAME	An alias for a zone name that allows multiple names to resolve to the same IP address.
TXT	Allows arbitrary text to be associated with a zone name that is commonly used for SPF records and other types of verification.
NS	Specifies the name servers for a zone name.
SRV	Specifies the location of services for a zone name commonly used for Session Initiation Protocol (SIP) and other protocols.

The following are examples of record types and their formats:

Record Type	Record Name	Record Value	Notes
A	example.com	192.168.1.1
AAAA	example.com	2001:0db8:85a3:0000:0000:8a2e:0370:7334
MX	example.com	mail.example.com	Priority is mandatory
CNAME	www.example.com	example.com
TXT	example.com	v=spf1 mx -all
NS	example.com	ns1.example.com
SRV	_sip._tcp.example.com	10 5060 sipserver.example.com	Priority weight port is mandatory

Does Cloud DNS support both IPv4 and IPv6 addresses?

Yes, Cloud DNS provides support for both IPv4 and IPv6 addresses.

Does IONOS Cloud DNS support reverse DNS?

Yes, IONOS Cloud DNS supports reverse DNS lookup for the following:

• Public IPv6 addresses assigned to your VDCs.

• Reserved IPv4 addresses.

What is the format of the default PTR record of IPv4 addresses?

Default PTR records follow the format ipAAA-BBB-CCC-DDD.pbiaas.com, whereby AAA-BBB-CCC-DDD corresponds to the IPv4 octets.

Where are the servers located?

The IONOS Name Server infrastructure is distributed across 14 point-of-presence (POP) locations in Europe and the USA to ensure fast and reliable DNS resolution for users across these locations.