Revise external providers help links

content/dns/_partials/_dnssec-providers.md

@@ -12,7 +12,7 @@ _build:
 This is not an exhaustive list of how to update DS records in other providers, but the following links may be helpful:
 
 - [DNSimple](https://support.dnsimple.com/articles/cloudflare-ds-record/)
-- [domaindiscount24](https://www.domaindiscount24.com/faq/en/dnssec)
+- [domaindiscount24](https://support.domaindiscount24.com/hc/articles/4409759478161-DNSSEC)
 - [DreamHost](https://help.dreamhost.com/hc/en-us/articles/219539467-DNSSEC-overview)
 - [dynadot](https://www.dynadot.com/community/help/question/set-DNSSEC)
 - [enom](https://help.enom.com/hc/en-us/articles/115001028212-Adding-a-DNSSEC-to-a-Domain-Name)
@@ -25,10 +25,9 @@ This is not an exhaustive list of how to update DS records in other providers, b
 - [Joker.com](https://joker.com/faq/content/6/461/en/dnssec-support.html)
 - [name.com](https://www.name.com/support/articles/205439058-Managing-DNSSEC)
 - [namecheap](https://www.namecheap.com/support/knowledgebase/article.aspx/9722/2232/managing-dnssec-for-domains-pointed-to-custom-dns)
-- [nameISP](https://www.nameisp.com/en/customer-service?question=dnssec)
+- [nameISP](https://support.nameisp.com/answers/dns)
 - [namesilo](https://www.namesilo.com/Support/DS-Records-%28DNSSEC%29)
 - [OVH](https://api.ovh.com/console/#/domain/%7BserviceName%7D/dsRecord#POST)
-- [Public Domain Registry](http://manage.publicdomainregistry.com/kb/answer/1909)
 - [registro.br](https://registro.br/tecnologia/dnssec.html?secao=tutoriais-dns)
 - [Porkbun](https://kb.porkbun.com/article/93-how-to-install-dnssec) (do not fill out **keyData**).