# How do I find all ISSNs assigned to a journal title in Crossref?

**URL:** https://community.crossref.org/t/how-do-i-find-all-issns-assigned-to-a-journal-title-in-crossref/3447
**Category:** Interfaces for Machines
**Tags:** metadata-retrieval
**Created:** [6 April 2023 13:57 UTC](https://community.crossref.org/t/how-do-i-find-all-issns-assigned-to-a-journal-title-in-crossref/3447 "2023-04-06T13:57:33Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![BessM](https://avatars.discourse-cdn.com/v4/letter/b/bb73d2/32.png) [@BessM](https://community.crossref.org/u/BessM)
#### Post date: [6 April 2023 13:57 UTC](https://community.crossref.org/t/how-do-i-find-all-issns-assigned-to-a-journal-title-in-crossref/3447/1 "2023-04-06T13:57:33Z")

</div>

Is it possible to find all ISSNs assigned to a journal title in Crossref (using XML API and pubid?)?

---

<div class="post-metadata">

### Author: ![Shayn](https://sea2.discourse-cdn.com/flex020/user_avatar/community.crossref.org/shayn/32/57_2.png) [@Shayn](https://community.crossref.org/u/Shayn)
#### Post date: [6 April 2023 17:26 UTC](https://community.crossref.org/t/how-do-i-find-all-issns-assigned-to-a-journal-title-in-crossref/3447/2 "2023-04-06T17:26:55Z")

</div>

Hi Bess,

Thanks for your question.

There’s no way to do this with the XML API. Your best option is probably to search the [Title List](https://apps.crossref.org/titleList/) or download the [Title List csv](https://www.crossref.org/documentation/reports/xml-journal-list/) file.

There’s a way to sort of approximate what you’re looking for using the REST API, but that will take multiple steps to ensure that you’re not missing any ISSNs. So, I think the Title List would work better.

-Shayn