.io domains are perhaps fashionable, but they are expensive.
For $0.88-$0.99/yr one can have a domain in the same registry as the Alphabet Inc. website's domainname. For that price, it would not be a clever name, but it could be an easy-to-memorize 6-digit number. What if it is only used for an API endpoint?
A higher level of "reliability" IMHO could be achieved by use and publication of a stable IP address, perhaps anycasted if one can afford it. At least it could be a backup for emergencies, such as DNS failures.
Consider that DNS itself e.g., disseminiation of root.zone, does not rely on DNS. The IP address for ftp.internic.net is well known and rarely changes. As I recall, when it does, they notify the public in advance. Some years ago if I am not mistaken, there was a change from 208.77.188.26 to 192.0.32.9.
Another example is third party DNS providers. They too publish stable IP addresses. Sometimes users might even memorize them, or store lists of these addresses e.g. included within installed software.
As a user, I hold no bias against any company that publishes its stable IP addresses. In fact, on the issue of reliablity I would hold them in higher regard than those who rely 100% on DNS and third parties associated with DNS service. DNS is reasonably reliable, but IMO not more so than a stable IP address.
For $0.88-$0.99/yr one can have a domain in the same registry as the Alphabet Inc. website's domainname. For that price, it would not be a clever name, but it could be an easy-to-memorize 6-digit number. What if it is only used for an API endpoint?
A higher level of "reliability" IMHO could be achieved by use and publication of a stable IP address, perhaps anycasted if one can afford it. At least it could be a backup for emergencies, such as DNS failures.
Consider that DNS itself e.g., disseminiation of root.zone, does not rely on DNS. The IP address for ftp.internic.net is well known and rarely changes. As I recall, when it does, they notify the public in advance. Some years ago if I am not mistaken, there was a change from 208.77.188.26 to 192.0.32.9.
Another example is third party DNS providers. They too publish stable IP addresses. Sometimes users might even memorize them, or store lists of these addresses e.g. included within installed software.
As a user, I hold no bias against any company that publishes its stable IP addresses. In fact, on the issue of reliablity I would hold them in higher regard than those who rely 100% on DNS and third parties associated with DNS service. DNS is reasonably reliable, but IMO not more so than a stable IP address.