I found them via IP address, so I don’t know anything about the company beyond that.

2a09:: 2a11:: and 2409:: are the shortest.

https://knowyourmeme.com/memes/family-laughing-at-crying-child-opening-christmas-present

That includes some history, but not the prompt itself.

It’s not about how people write them, it’s how parsers parse them. IPv4 has been around since 1982, and most parsers interpret leading zeros as octal.

Because 1.2.3.4 and 1.02.003.04 both map to the same number.

But 10.20.30.40 and 010.020.030.040 map to different numbers. It’s often best to reject IPv4 addresses with leading zeroes to avoid the decimal vs. octal ambiguity.

Java is still borked in a dual-stack environment: https://bugs.openjdk.org/browse/JDK-8170568

uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
:q

When I was in ~9th grade ordering 72-pin SIMMs, I read MUST BE INSTALLED IN PAIRS and assumed that vendor only shipped to France.