<![CDATA[Keeping the 2 first digits from an IP?]]>I have this range of IP’s:
19.20.21.22
19.21.22.23
20.150.172.28
20.192.238.24
21.193.128.44
22.193.12.6

I want to keep only the 2 first digits and delete duplicates

Results:
19
20
21

]]>https://community.notepad-plus-plus.org/topic/22825/keeping-the-2-first-digits-from-an-ipRSS for NodeTue, 16 Jun 2026 02:45:02 GMTSat, 09 Apr 2022 12:47:49 GMT60<![CDATA[Reply to Keeping the 2 first digits from an IP? on Tue, 19 Apr 2022 12:28:16 GMT]]>Note this is for Azure Public IP List,
not for AWS

]]>https://community.notepad-plus-plus.org/post/76164https://community.notepad-plus-plus.org/post/76164Tue, 19 Apr 2022 12:28:16 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Tue, 19 Apr 2022 12:26:24 GMT]]>@alan-kilborn

Thanks for helping a Newbie :) With your help I was able to achive my task.

Solution to clean up AWS Public IP list
https://ip-ranges.amazonaws.com/ip-ranges.json

Removed all alphabet: \b(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(.(?1)){3}\b

412be648-63bb-4714-8a80-80083ea65131-image.png

Then

Find: (?-s)^(\d+)..+
Replace: ${1}
Search mode: Regular expression

Then

839e2b87-2c73-4d67-af76-084cab350c77-image.png

Final Results for first set of IP’s in Microsoft Azure Publip IP List
d9f2f80c-8b65-4fd4-8e16-be9cb59863dc-image.png

]]>https://community.notepad-plus-plus.org/post/76163https://community.notepad-plus-plus.org/post/76163Tue, 19 Apr 2022 12:26:24 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Mon, 11 Apr 2022 11:55:08 GMT]]>@roger-st-onge

It’s because you misrepresented your data.
What you showed originally started in column 1 (well, as far as anyone could tell).
The ^ in the expression means start-of-line must occur there.
Experiment with removing that character from the find expression.
Also a good idea to read up on regular expression searching; see this site’s FAQ page.

]]>https://community.notepad-plus-plus.org/post/75936https://community.notepad-plus-plus.org/post/75936Mon, 11 Apr 2022 11:55:08 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Mon, 11 Apr 2022 11:44:21 GMT]]>@roger-st-onge Still having issue, not able to make it work5c4a0f86-258f-4e2a-a3b0-1b797eb3dd47-image.png

]]>https://community.notepad-plus-plus.org/post/75935https://community.notepad-plus-plus.org/post/75935Mon, 11 Apr 2022 11:44:21 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Mon, 11 Apr 2022 11:01:35 GMT]]>@alan-kilborn, look like it’s not finding anything…376221ff-ce11-4d35-af78-761a01f71c9c-image.png

]]>https://community.notepad-plus-plus.org/post/75934https://community.notepad-plus-plus.org/post/75934Mon, 11 Apr 2022 11:01:35 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Sat, 09 Apr 2022 19:23:09 GMT]]>@alan-kilborn ,
Thanks Alan, another NPP capability I wasn’t aware of…but that just means my needs haven’t been expansive enough to seek it out, but I’m getting there. :)

]]>https://community.notepad-plus-plus.org/post/75895https://community.notepad-plus-plus.org/post/75895Sat, 09 Apr 2022 19:23:09 GMT<![CDATA[Reply to Keeping the 2 first digits from an IP? on Sat, 09 Apr 2022 12:59:04 GMT]]>@roger-st-onge

Find: (?-s)^(\d+)\..+
Replace: ${1}
Search mode: Regular expression

Follow that with this action:

76a16a3d-6f38-4677-b8c6-3ecab453a1f5-image.png

]]>https://community.notepad-plus-plus.org/post/75886https://community.notepad-plus-plus.org/post/75886Sat, 09 Apr 2022 12:59:04 GMT