I just had to think of an example of a public IP address, and my brain instantly popped this out from one of its dark recesses:

128.197.27.7

(Looking up the associated domain name didn't make me feel any better 👴)

@siracusa I always think of 8.8.8.8, thanks google.
@siracusa 198.6.1.4, an old uunet dns server is my IP from the crypt. Though when my more modern mind answers it’s always just 8.8.8.8 since it’s nice and quick
@donw @siracusa 36.44.0.6. I don’t have to even stop and think—it just comes out of my fingers. Those of our era should recognize it immediately! cc @adamengst
@siracusa @donw @adamengst @glennf sumex-aim was the holy grail of FTP sites for Mac people. This was the IP that came to mind for me too.
@flenser @siracusa @donw @glennf Whoa, sumex-aim is a blast from the past. I fondly remember being an Info-Mac moderator.
@adamengst @flenser @siracusa @donw I remember typing in the IP a lot because…was DNS slow? Somehow, it was easier to type the number.
@siracusa 4.2.2.1 is my go to. The old bbnet/genuity name servers

@sfrazer434 I recognize that one, it's been a long time since I've used it though.

When it comes to example IPs I'm boring, I always use 192.0.2.0/24, one of the assignments for documentation.

I have seen the results of not doing that, a customer once had their whole internal network (behind may) overlapping some IBM space, because they just followed the examples from their AS400 app documentation...whoops

I find 18.27.72.81 easy to remember because it's a palindrome
@siracusa i hate that i recognized the network still
[Chapter 10] 10.3 Socket I/O in Perl

@rocket I’m pretty sure I interacted with the author of that book in some capacity back in the 90s.
@siracusa “Shall we walk or do we have time to take the B-Line?”

@siracusa I’ve been telling this joke for a decade.

I just saw this tonight. Holy hell, Boston. https://youtu.be/QYtgILw3Yrs?si=Dzx3PkFY-Z9kkSQc

Can You Outrun Boston's Subway?

YouTube
@siracusa 131.111.12.20 is the main University of Cambridge DNS. Rather like nuclear submarines surfacing and listening for Radio 4, if I can't ping that, I know something's wrong.
@spride @siracusa CIX's was 194.153.0.18. Burned into my brain still, 30 years later.
@siracusa huh, not too surprising I guess, but two of UT Austin’s /16’s are in 128.0.0.0/8. Probably allocated around the same time.
@siracusa per arin.net, 1985 for UT, 1987 for that BU /16. Not as close as I imagined.
@siracusa 192.168.0.1
Can’t even remember what it’s from. But it’s stuck.
@coachmike66 careful! That’s a private IP, not a public one.
@siracusa Sick Burn BU! I think NEU did it classier (It used to be a Sparc machine): 129.10.116.115