I agree that changing the EPP XML URIs or customizing the XML schema files, 
where backward compatibility is not maintained, is not EPP.  I had to modify 
the EPP XML schemas a couple times (e.g., support I-D RGP "(pre/post)Whois" 
elements and the RGP RFC "(pre/post)Data" elements during a transition period) 
in my 20+ years of implementing EPP, but they were transitory in nature and 
maintained backward compatibility.  Note, the RGP change could have been 
mitigated by using point versioning of the XML URIs that was used with later 
EPP extensions like the Registry Fee Extension 
("urn:ietf:params:xml:ns:fee-0.XX" up to -09 and 
"urn:ietf:params:xml:ns:epp:fee-1.0" after WGLC and in the RFC).  Changing of 
the EPP XML URIs or making non-backward compatible changes to the XML schema 
files should not be classified as EPP, since the same client software cannot be 
used with the server independent of the server policy differences.       

-- 

JG 



James Gould
Fellow Engineer
jgo...@verisign.com 
<applewebdata://13890C55-AAE8-4BF3-A6CE-B4BA42740803/jgo...@verisign.com>

703-948-3271
12061 Bluemont Way
Reston, VA 20190

Verisign.com <http://verisigninc.com/> 




On 8/22/24, 5:09 AM, "Thomas Corte (TANGO support)" <thomas.co...@knipp.de 
<mailto:thomas.co...@knipp.de>> wrote:


Caution: This email originated from outside the organization. Do not click 
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Hello,


On 22.08.24 08:37, Tobias Sattler wrote:


> I investigated which ccTLD might run EPP a while ago based on publicly 
> available information.
> 
> I don’t know if those ccTLDs are following this list, and I cannot guarantee 
> its 100% correctness, 
> but maybe it helps you.
> 
> https://secure-web.cisco.com/1WpRMm1SCXp9y4vELKdzIcx_y5fza9EmONwtUyVCAg9IhD-z6AxDGtgCL7lQ25R5pZHUSOaKqHDptf_uxPsATYTuIFjNszNAddMEIPZwzi5EhQgA2VqsWCdvKFYK2nYUD3uBlghuYo0vQKutGNylKLBvgkOzKMdAFI4Kf0F28gNir0aM7YwloOk1fKj1DhmW8NEoq-2vXS6BLDqr9TBAgj7yYPPGmlKQverV5bkcWbQWesfw_ZlQQ1gFQwmYjJVDrmibVLklQYOW5dvghsdQg0GSMDb-Pbv6L3dgpoH4_ufE/https%3A%2F%2Fdocs.google.com%2Fspreadsheets%2Fd%2F1IMk5TBzeoJTOwDJfQ-I50Kztwr3bipdjcLKy1etG3cg%2Fedit%3Fusp%3Dsharing
>  
> <https://secure-web.cisco.com/1WpRMm1SCXp9y4vELKdzIcx_y5fza9EmONwtUyVCAg9IhD-z6AxDGtgCL7lQ25R5pZHUSOaKqHDptf_uxPsATYTuIFjNszNAddMEIPZwzi5EhQgA2VqsWCdvKFYK2nYUD3uBlghuYo0vQKutGNylKLBvgkOzKMdAFI4Kf0F28gNir0aM7YwloOk1fKj1DhmW8NEoq-2vXS6BLDqr9TBAgj7yYPPGmlKQverV5bkcWbQWesfw_ZlQQ1gFQwmYjJVDrmibVLklQYOW5dvghsdQg0GSMDb-Pbv6L3dgpoH4_ufE/https%3A%2F%2Fdocs.google.com%2Fspreadsheets%2Fd%2F1IMk5TBzeoJTOwDJfQ-I50Kztwr3bipdjcLKy1etG3cg%2Fedit%3Fusp%3Dsharing>
>  


Given that e.g. .pl and .cz are on this list, it should be pointed out that the 
list is based on a 
very lax interpretation of "using EPP". Among other things, these two 
registries (these are just 
examples I'm aware of, I'm sure there are other offenders) are using heavily 
modified versions of 
the EPP XML schema files, with a custom target namespace, so that's not really 
EPP at all; 
registrars thinking they can just use their off-the-shelf EPP client to connect 
to them are in for a 
rude awakening.


So "using EPP" here really means something like "XML-based provisioning 
protocol, roughly resembling 
EPP".


Best regards,


Thomas


-- 
TANGO REGISTRY SERVICES®
Knipp Medien und Kommunikation GmbH Thomas Corte
Technologiepark Phone: +49 231 9703-222
Martin-Schmeisser-Weg 9 Fax: +49 231 9703-200
D-44227 Dortmund E-Mail: thomas.co...@knipp.de <mailto:thomas.co...@knipp.de>
Germany


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