Here is a list with their links:
XYZ: https://gen.xyz/account/knowledgebase/32/How-do-I-set-an-A-record-for-a-domain-name.html
123 Reg: https://www.123-reg.co.uk/support/domains/how-do-i-point-my-domain-name-to-an-ip-address/
Alfahosting: https://alfahosting.de/antworten-auf-ihre-fragen/?cid=78#faqContent
AWS Route 53: https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/resource-record-sets-creating.html
Binero: https://www.binero.se/guider/guider-dom-nnamn/dns/skapa-a-record
Bluehost: https://www.bluehost.com/help/article/dns-management-add-edit-or-delete-dns-entries
Cloudflare: https://support.cloudflare.com/hc/en-us/articles/360019093151
ClouDNS: https://www.cloudns.net/wiki/article/10/
Crazy Domains: https://www.crazydomains.com/help/
DigitalOcean: https://www.digitalocean.com/community/tutorials/an-introduction-to-digitalocean-dns
DNS Made Easy: http://help.dnsmadeeasy.com/managed-dns/records/record/
DNSimple: https://support.dnsimple.com/articles/manage-a-record/
DreamHost: https://help.dreamhost.com/hc/en-us/articles/215414867-How-do-I-add-custom-DNS-records-#A_record
Enom: https://help.enom.com/hc/en-us/articles/115000474012-How-to-Change-DNS-Host-Records
Freeparking: https://helpdesk.freeparking.co.nz/index.php?/Knowledgebase/Article/View/314/0/managing-basic-dns-records
Gandi: https://wiki.gandi.net/en/dns/zone/a-record
Godaddy (domaincontrol.com): https://www.godaddy.com/help/add-an-a-record-19238
Google Domains: https://support.google.com/a/answer/2579934?hl=en&ref_topic=2721296
Hover: https://help.hover.com/hc/en-us/articles/217282457-How-to-Edit-DNS-records-A-AAAA-CNAME-MX-TXT-SRV-
Inmotion: https://www.inmotionhosting.com/support/domain-names/dns-nameserver-changes/a-record-change
iPage: https://www.ipage.com/help/article/dns-management-how-to-update-a-records
Iwantmyname: https://iwantmyname.com/services/website-builder/webflow
Media Temple (mediatemple.net): https://mediatemple.net/community/products/dv/204403794/how-can-i-change-the-dns-records-for-my-domain#4
Name.com: https://www.name.com/support/articles/115004893508-Adding-an-A-record
Namecheap (registrar-servers.com): https://www.namecheap.com/support/knowledgebase/article.aspx/319/2237/how-can-i-set-up-an-a-address-record-for-my-domain
NameSilo: https://www.namesilo.com/CustomDomain/Webflow
Network Solutions: https://knowledge.web.com/subjects/article/KA-01111/en-us#A%20Record
NS1: https://ns1.com/articles/adding-records-to-a-zone
One.com: https://help.one.com/hc/en-us/articles/115005595925-Manage-your-DNS-settings-#ipaddress
OVH: https://docs.ovh.com/gb/en/domains/web_hosting_how_to_edit_my_dns_zone/#cname
Squarespace Domains: https://support.squarespace.com/hc/en-us/articles/360002101888-Adding-custom-DNS-records-to-your-Squarespace-Domain
Wixdns: https://support.wix.com/en/article/adding-dns-records-in-your-wix-account
Yahoo: https://help.smallbusiness.yahoo.net/s/article/SLN17916