this post was submitted on 08 Jul 2025
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    For those who want to try it at home:

    ping 33333333
    ping 55555555
    

    I am sorry, two random Internet users in Korea and Germany, your IP addresses are simply special.

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    [–] [email protected] 4 points 6 hours ago

    Superior Ping:

    [–] [email protected] 6 points 7 hours ago (3 children)

    I'm probably going to get downvoted to hell but I have to ask: Can someone please explain? I'm perpetually trying to expand my knowledge on the technical side of Linux.

    [–] [email protected] 7 points 6 hours ago* (last edited 6 hours ago)

    This is the behaviour of inet_aton, which ping uses to translate ASCII representations of IPv4 addresses to a 32 bit number. Its manpage: https://man7.org/linux/man-pages/man3/inet_aton.3.html

    It recognizes the usual quad decimal notation of course, but also addresses of the form a.b.c or a.b, or in this instance, a, with is taken to be a 32bit number.

    Each part can also be written in hex or octal, with the right prefix, such that 10.012.0x800a is as valid form for 10.10.128.10.

    Not all software use inet _aton to translate ASCII addresses. inet_pton for instance (which understands both v4 and v6) doesn't

    [–] [email protected] 2 points 7 hours ago

    An IP address is a 32-bit number, usually expressed as four 8-bit numbers separated by dots. Converting 33333333 to hex we get 01FCA055; splitting that into pairs and converting back to decimal gives 1, 252, 160, 85.

    [–] [email protected] 2 points 7 hours ago

    Typically an IP address is represented as 4 8-bit integers (1.252.160.85), but it can also be represented as a single 32-bit integer (33333333). The ping utility accepts both forms.

    [–] [email protected] 2 points 15 hours ago (1 children)

    Also two random internet users in Korea and Germany, your IP addresses are blocked by mail server since I started getting phishing emails from your country.

    [–] [email protected] 1 points 8 hours ago

    Yo7 block entore countries over a few fishing e-Mails?

    [–] [email protected] 79 points 1 day ago (2 children)

    Best ping is 127.0.0.1

    It always resolves!

    [–] [email protected] 16 points 1 day ago (1 children)

    Fun fact 127.0.0.1-127.255.255.254 is all localhost

    [–] [email protected] 9 points 18 hours ago* (last edited 18 hours ago) (2 children)

    Pretty insane that around 0.4% of all IPv4 addresses are wasted.

    [–] MystikIncarnate 12 points 15 hours ago

    Wayyyyyy more than that is wasted.

    [–] [email protected] 2 points 14 hours ago (1 children)

    Apple (and others) used to have an A class. I think they gave some of it back to the pool.

    [–] [email protected] 3 points 10 hours ago (1 children)

    public universities have entered the chat

    [–] [email protected] 3 points 8 hours ago (1 children)

    A few years ago my old university finally went with NAT instead of handing out public IPs to all servers, workstations and random wifi clients. (Yes, you got a public IP on the wifi. Behind a firewall, but still public.) I think they have a /16 and a few extra /24s in total.

    [–] [email protected] 1 points 6 hours ago

    Honestly there isn't much reason to go with NAT unless you are looking to lease/sell IPs

    The sad part is that almost no universities do IPv6

    [–] [email protected] 38 points 1 day ago (3 children)

    Try pinging 127.1 - it is the same, but shorter.

    Just another tipp from someone who learned TCP/IP from reading the sources over three decades ago...

    [–] [email protected] 7 points 1 day ago (2 children)
    [–] [email protected] 3 points 11 hours ago (1 children)

    This is a special case. This resolves to 0.0.0.0, and technically cannot be routed. Some(!) systems use it as a kind of alias for all local network addresses, but it is not a given.

    [–] [email protected] 1 points 8 hours ago

    I'm aware. Conveniently this works on all the systems I've tried, making it useful for testing local services (e.g. ssh 0).

    [–] [email protected] 1 points 22 hours ago (1 children)

    That resolves to 0.0.0.0 - rarely useful

    [–] [email protected] 3 points 16 hours ago (1 children)
    [–] [email protected] 1 points 11 hours ago

    But it does not work by definition, it is non-routable. That some systems use it as an alias is a different issue.

    [–] [email protected] 10 points 1 day ago (1 children)
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    [–] [email protected] 63 points 1 day ago (7 children)

    ping 1.1 also works. It resolves to 1.0.0.1, which is Cloudflare's secondary DNS

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    [–] [email protected] 48 points 1 day ago (5 children)

    I prefer:

    ping 133742069
    

    (probably lands you on a list tho...it's a US DoD IP)

    [–] [email protected] 2 points 10 hours ago

    I fondly remember regularly logging into simtel20.wsmr.army.mil back in the days (WSMR=White Sands Missile Range). No issue, just used "anonymous" as the username, and your email address as the password. And even the email address was just a convenience...

    [–] [email protected] 16 points 1 day ago (1 children)

    Gotta make sure to do it from a Russian VPN too.

    [–] [email protected] 2 points 16 hours ago

    "one ping only, please"

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    [–] remotelove 51 points 1 day ago (1 children)

    For those who are still confused, ping works with 32 bit unsigned integers. While there certainly are more uses, it's a much more convenient method for storing IP address in a database as it's easier to sort and index than 4 numbers separated by 4 periods

    http://www.aboutmyip.com/AboutMyXApp/IP2Integer.jsp?ipAddress=1.1.1.1

    [–] [email protected] 29 points 1 day ago* (last edited 1 day ago)

    it's so simple!

    
    ping -c 4 $(mysql -u frodo -p keepyoursecrets -D /home/pingtargets.db -se "SELECT ip FROM servers ORDER BY RAND() LIMIT 1;")
    
    [–] [email protected] 5 points 1 day ago* (last edited 1 day ago)

    ping 9.9.9.9

    It's 1111 higher.

    [–] [email protected] 7 points 1 day ago
    [–] [email protected] 19 points 1 day ago (7 children)

    55555555

    All addresses that that start in 555 were left open by the internet protocol developers just for movies and TV shows.

    [–] [email protected] 4 points 10 hours ago

    And the ones starting with 800 are for Pay Per View?

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    [–] [email protected] 3 points 1 day ago (6 children)

    Obligatory: Fuck Drake.

    There are dozens of meme templates like this that you could have used instead

    [–] [email protected] 2 points 15 hours ago (1 children)

    There are things you could have done besides act self righteous on the internet, and yet here you are

    [–] [email protected] 1 points 9 hours ago (1 children)

    It takes 0 effort to not support a creep

    [–] [email protected] 1 points 9 hours ago (1 children)

    Ah you see the mistake you've made is thinking that somehow posting a picture of someone supports them. This is because you spend too much time looking at screens

    [–] [email protected] 0 points 7 hours ago (1 children)

    It makes them part of the cultural Zeitgeist. And when they are already famous, it maintains their currency in that regard.

    [–] [email protected] 1 points 6 hours ago

    Yes this is an example of internet think

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