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IP adderss -- FIrst octet now 81 ?

Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

IP adderss -- FIrst octet now 81 ?

I have always had a (dynamic) IP address from PN starting with 87 in the first octet.
I rarely check my IP address these days, but happened to tonight and noticed the first octet is 81
que pasa?
11 REPLIES
Superuser
Superuser
Posts: 9,770
Thanks: 1,151
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Registered: 06-04-2007

Re: IP adderss -- FIrst octet now 81 ?

Some of the PN IPs are in an 81.x.x.x range.
If you use the gateway checker does that give you an answer? It won't if the IP isn't in a recognised range.
David
Community Veteran
Posts: 1,229
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Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

I usually use tracert to find my gateway, quicker than the gw checker ... it's pcl-ag05 as it happens, which i'm guessing is quite new?
Just seemed odd that after so many years, this seemd to be the first time I got a 81.xxx ... wondered if there were changes to the network afoot.
VileReynard
Seasoned Pro
Posts: 10,992
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Registered: 01-09-2007

Re: IP adderss -- FIrst octet now 81 ?

In the light of people [ACS] farming ip addresses, I use a Linux script to log my current internet facing ip address - every 10 minutes. Sad
Just because I might be paranoid, doesn't mean they aren't out to get you!
Quote
#! /bin/bash
date_stamp=$(date +%d/%m/%Y@%X)
exip=$(wget -qO - checkip.dyndns.org | grep -Eo '[0-9\.]+')
echo "$date_stamp $exip" >> /var/log/whatismyip.log

I haven't noticed any 81.x.x.x ip addresses though.

Community Veteran
Posts: 1,229
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Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

my connection used to drop reasonably often, so I regularly ran a little batch file along similar lines (I'm XP rather than Linux in the main) just to keep a log of what was going on, and just happened to do so tonight ...
tracert portal.plus.net | awk '{if($1~2){print $8,$9}}' >> gw.dat
nslookup mydyndnsaddress.dyndns.org | awk '{if($2~/87/){print $2}}' >> gw.dat

Not as elegant as Linux, but then cmd isn't bash
Community Veteran
Posts: 38,460
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Registered: 15-06-2007

Re: IP adderss -- FIrst octet now 81 ?

I don't need to as I have had a fixed IP address for almost the whole time I have been with Plusnet  Grin
Community Veteran
Posts: 1,229
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Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

well good for you
Community Veteran
Posts: 26,718
Thanks: 931
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Registered: 10-04-2007

Re: IP adderss -- FIrst octet now 81 ?

Where did you get awk from?
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
Community Veteran
Posts: 1,229
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Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

there's half a dozen free DOS ports kicking around , just google for them; i can;t remember where mine came from . The most full featured POSIX compliant one will probably be  a GNU gawk http://www.gnu.org/software/gawk/gawk.html
Community Veteran
Posts: 26,718
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Registered: 10-04-2007

Re: IP adderss -- FIrst octet now 81 ?

You could speed up the script very considerably by replacing the tracert with
tracert -h 2 ntp.plus.net
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

you'll be telling me to read the manual next jelv ... Smiley
Highlighted
Community Veteran
Posts: 1,229
Thanks: 1
Registered: 30-07-2007

Re: IP adderss -- FIrst octet now 81 ?

ooooh yes, very snappy !