Thanks for confirming. I will try to track down a new number, if one still exists! I'll let everyone know.
-Steve
Sent: Tuesday, January 17, 2017 10:23 AM
To: michlib-l@mcls.org
Subject: Re: [Michlib-l] Library Unique 4-Digit Identifier
Hi Everyone – since we are doing the same thing here in Lakeland with a new member library. I called the 1-800 listed on the DALNET website. I got a library helpdesk located in Toronto, Canada and they are not a “national barcode registry”. She had already received one phone call this morning, I was her second. I told her I would post to this listserv and let you know that that number has an error or no longer exists and has been assigned elsewhere.
Thanks everyone.
Sheryl VanderWagen
ILS Manager
Lakeland Library Cooperative
4138 3 Mile Rd NW
Grand Rapids MI 49534-1134
(616)559-5253 x210 (Phone) 616-559-4329 (Fax)
(616)559-9111 (Lakeland Help Line)
sheryl@llcoop.org
From: michlib-l-bounces@mcls.org [mailto:michlib-l-bounces@mcls.org]
On Behalf Of Steven Bowers
Sent: Tuesday, January 17, 2017 8:41 AM
To: T.A. Cutler Memorial Library; michlib-l@mcls.org
Subject: Re: [Michlib-l] Library Unique 4-Digit Identifier
Did the sponsoring company tell you there is no longer a national registry? I hope there still is. Here is the information we last had for contact:
https://dalnetconsortium.wordpress.com/2008/02/01/national-barcode-registry/
Please let me know if they wont do it anymore.
-Steve
From:
michlib-l-bounces@mcls.org <michlib-l-bounces@mcls.org> on behalf of T.A. Cutler Memorial Library <CutlerLibrary@live.com>
Sent: Monday, January 16, 2017 3:07 PM
To:
michlib-l@mcls.org
Subject: [Michlib-l] Library Unique 4-Digit Identifier
Hello,
We are planning to migrate from a 5- to 7-digit alpha-numeric barcode for patron accounts and item records to the standard 14-digit numeric barcode.
I'm hoping to find a unique (or relatively unique) 4-digit identifier. Since I've been told there isn't a national registry for this anymore, I thought I'd just check with all of you on the listserv whether your library uses any of the following three combinations as your library's code:
5141
2077
4380
If you use one of those four (or know a library that does), please let me know. Please reply off-list to
cutlerlibrary@live.com 
Also, if you have a supplier you love for barcodes/library cards, could you please share that information.
Lastly, do you use a check-digit in your barcode and if so, which symbology do you use?
Thank you very much!
Jessica Little
Library Director
T.A. Cutler Memorial Library
312 Michigan Ave.
Saint Louis, Michigan 48880
(989) 681-5141