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A Records

What are A (Address) Records?

A records map a FQDN (fully qualified domain name) to an IP address and are the most used record type in any DNS configuration. A records can be configured in a domain for a specific host such as www.example.com or for the root record (sometimes represented with an @ symbol) of a domain such as example.com.

Related Tutorials:

A Record Pools
DNS Failover for A Record
Round Robin
Weighted Round Robin

Video Tutorial: How to Add, Edit, and Delete Records

A RECORD FIELDS

Field Description

Name This will be the host name for the record, typically a computer or server within your domain. It is important to note, the domain name is automatically appended to the “Name” field of the record. For example, defining www.example.com in DNS would be creating an A record with the name field of “www” within the example.com domain. If the “Name” field is left blank, then it represents the root record of the domain. The root record for the base domain can also be referred to as the apex record and is represented using an @ symbol in some documentations.

IP The IPv4 address of your FQDN. An IP (Internet Protocol) address consists of a four octet 32-bit address.

TTL The TTL (Time to Live) in seconds is the amount of time the record will cache in resolving name servers and web browsers. The longer the TTL, then the less frequently remote systems will lookup the DNS record, and the less query traffic the domain receives. The shorter the TTL, then the faster DNS changes will propagate in servers that have cached data. However this also contributes to a higher volume of query traffic the domain will receive.
Recommended values:
Records configured with Failover or that change often should have TTL’s set anywhere from 180 to 600 (3 to 10 minutes cache).
Records that are static and don’t change often should have TTL’s set between 1800 (being on the low end) to 86400 seconds (30 minutes to 1 day cache).
If a change is needed for a record with a high TTL, then the TTL can be lowered prior to making the change and then raised back up again after.

ADD AN A RECORD

1.Select Managed DNS and click on Domains
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2. Select the Domain Name you want to add an A record to.
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3. Under the A Records section, click the plus_icon to add a record.
add a record

4. In this screen, you will add the record information. Follow the steps below:

A) Name: This will be the hostname for your record. It is important to note, the domain name is automatically appended to the “Name” field of the record.
B) TTL: Edit the TTL. Time to Live is measured in seconds and is the amount of time the record will cache in resolving name servers and web browsers.
C) Record Mode: The Record Mode will be left at Standard for this tutorial. Please note, the other Record Mode options are covered in different tutorials.
D) IP Address: The IPv4 address of your FQDN. An IP (Internet Protocol) address consists of a four octet 32-bit address.
E) Note: Add a helpful note with keywords so you can search for your records later.
F) Save and Close: Save your changes. Don’t forget to commit your changes.

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 Information on the NX Domain feature can be found in the Disabling a Record tutorial.

EDIT AN A RECORD

1. Select Managed DNS and click on Domains
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2. Select the Domain Name you want to edit
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3. Under the A Records section, select a record by clicking the check mark next to it, then click the edit_icon icon to edit a record.
edit an A record
Please note, you can not edit a record that has not been committed following its creation.

4. Edit any of the record data you wish to change. Click Save and Close.
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DELETE AN A RECORD

1. Select Managed DNS and click on Domains
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2. Select the Domain Name you want to delete records from.
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3. Under the A Records section select a record by clicking the check mark next to it, click the delete_icon icon to delete a record.
delete a record
Please note, you can not delete a record that has not been committed following its creation.
4. The record will now show as strike through text, and is now in the queue of changes to be committed.
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5. If this was a mistake, you can click the undo_icon icon to undo the deleted record.
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