I don't recommend adding the requirement to register the namespace URI and 
schema as a dependency to register the extension in the EPP extension registry. 
 The registrations could be made a recommendation, but not a requirement.  One 
issue is that there are many EPP extensions out there that haven't been 
registered, where adding more hurdles will not help.  

-- 

JG 



James Gould
Fellow Engineer
[email protected] 
<applewebdata://13890C55-AAE8-4BF3-A6CE-B4BA42740803/[email protected]>

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

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




On 9/23/25, 8:01 AM, "Gavin Brown" <[email protected] 
<mailto:[email protected]>> wrote:


Caution: This email originated from outside the organization. Do not click 
links or open attachments unless you recognize the sender and know the content 
is safe. 


Hi Scott,


> On 22 Sep 2025, at 17:57, Hollenbeck, Scott 
> <[email protected] 
> <mailto:[email protected]>> wrote:
> 
> Sabrina, this request looks fine. I noticed, though, that there's nothing in 
> the specification to indicate if an XML schema (a URI is needed) and the XML 
> namespace URI 
> (https://secure-web.cisco.com/1N1-yW0MM4Zo2AezYY1Qf3S1aKzLJR1DfWNebKYyyUi_yqxlUCgNiFhzbfrdHWrzu5ANtGmTyrykUg8_8t_gcNAhfb3ZI_gR4z7AuEYI0DqCf8AKNLQ7O0eEOxidijaml4cfKjjCfH_XkLlH8PpRhXsO8GkgvEpQ8LHKV4UkiYpBnBG9BtzjLiBum262-etwCpDu0eME2Oj11QKpzSpYE9937G1ZwW1mDWpDAS-Gnf0_I4WvgA5TQw-ibPIvsiBMm8W56LgQTw6I4BzEQoslKs16tbWL3B4Mn_dbbx41ajVPiU0mJv_1-9SnKcsJ60UsD/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fwww.tango-rs.com%2Fepp%2Fidn-1.0__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniPaqaS7K$
>  
> <https://secure-web.cisco.com/1N1-yW0MM4Zo2AezYY1Qf3S1aKzLJR1DfWNebKYyyUi_yqxlUCgNiFhzbfrdHWrzu5ANtGmTyrykUg8_8t_gcNAhfb3ZI_gR4z7AuEYI0DqCf8AKNLQ7O0eEOxidijaml4cfKjjCfH_XkLlH8PpRhXsO8GkgvEpQ8LHKV4UkiYpBnBG9BtzjLiBum262-etwCpDu0eME2Oj11QKpzSpYE9937G1ZwW1mDWpDAS-Gnf0_I4WvgA5TQw-ibPIvsiBMm8W56LgQTw6I4BzEQoslKs16tbWL3B4Mn_dbbx41ajVPiU0mJv_1-9SnKcsJ60UsD/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fwww.tango-rs.com%2Fepp%2Fidn-1.0__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniPaqaS7K$>
>  [tango-rs[.]com]) are also being registered. They should be registered, too. 
> That's not a blocker for this request, but please share this feedback with 
> the submitter(s) and encourage them to register the schema and namespace, too.


Thanks for clarifying (privately) that the namespace URI and schema would be 
registered in the IETF XML Registry[1].


Since the only entries in those registries are IETF registrations, I assumed it 
was RFC Required or Standards Action, but actually it's just Specification 
Required. Lesson learned!


Registration of namespace URIs and schemas would be helpful to client 
implementers.


Could a requirement tor register them be included in rfc7495bis?


[1] 
https://secure-web.cisco.com/12NJnM9RbJzwqhZPOD0cyE3iOsdjEjAg5cDtjwMYMZIXgpawAlKJV4VuafGbpdeBb_TivDtNGP4yKqpd5WYuYWNJ24ESg6iWeQaves-4Dvrf5b5Nec_5EZnI6HIUYLT1-TJQwmQR4P01Uk8nLx-kInwGKpD6VmBMXmOi3b9kotFXN0PG2WxxGL3yG4BkkMYPSgVGOvb9hnl3RcxmgFLkzZoVMsLF6KIOE1MCJbXXi5slAxv0QUtt4a4C_l5EYxM66_k0ED2y0xcdiAkBWuazr3iolMQrvQfWCCni728R7UtU/https%3A%2F%2Fwww.iana.org%2Fassignments%2Fxml-registry%2Fxml-registry.xhtml
 
<https://secure-web.cisco.com/12NJnM9RbJzwqhZPOD0cyE3iOsdjEjAg5cDtjwMYMZIXgpawAlKJV4VuafGbpdeBb_TivDtNGP4yKqpd5WYuYWNJ24ESg6iWeQaves-4Dvrf5b5Nec_5EZnI6HIUYLT1-TJQwmQR4P01Uk8nLx-kInwGKpD6VmBMXmOi3b9kotFXN0PG2WxxGL3yG4BkkMYPSgVGOvb9hnl3RcxmgFLkzZoVMsLF6KIOE1MCJbXXi5slAxv0QUtt4a4C_l5EYxM66_k0ED2y0xcdiAkBWuazr3iolMQrvQfWCCni728R7UtU/https%3A%2F%2Fwww.iana.org%2Fassignments%2Fxml-registry%2Fxml-registry.xhtml>


Cheers,


G.


> 
> Scott
> 
>> -----Original Message-----
>> From: Sabrina Tanamal via RT <[email protected] 
>> <mailto:[email protected]>>
>> Sent: Friday, September 19, 2025 1:10 PM
>> Cc: Hollenbeck, Scott <[email protected] 
>> <mailto:[email protected]>>
>> Subject: [EXTERNAL] [IANA #1430284] INSERT "IDN EPP Extension for the
>> TANGO Registration System"
>> 
>> Caution: This email originated from outside the organization. Do not click 
>> links
>> or open attachments unless you recognize the sender and know the content is
>> safe.
>> 
>> Hi Scott,
>> 
>> We’ve received a new EPP Extension request. Please see the registration form
>> below (it’s also included in the requester’s message).
>> 
>> If you’re available, the due date for this request is October 3rd.
>> 
>> Thank you,
>> Sabrina
>> 
>> -----BEGIN FORM-----
>> Name of Extension:
>> "IDN EPP Extension for the TANGO Registration System"
>> 
>> Document Status:
>> Informational
>> 
>> Reference: 
>> https://secure-web.cisco.com/1RQoxI0XTjBPqXfZzvc1ZRMyzN8cNVtinBcH79EZdkuRwfbKXZ15Cco0eRWOOfduJOAEgk2UnlSU2TTnOiH_LiNuABxA4FAVpazuwdhC1m74yD8_7htLKLkigwQjJ_Md1VjAwQ3-2P5bHXqZzB4Wm3YoRPdxTrxhAdZMZ1WJq5rsYFs-MiGM8ZcBC-vsPHqAYnH-CjkHd9hNJgqfdeqZwo1GvuYM_rp0RPUSE1K0_jTXIZIxzDAXxMrLEV7wToSAv_zGmf3u-U47FqQtVa9aEbni_89OfKM7eTx3QoPZh6nw-uDxmQROIqKa3-MEZXAtl/https%3A%2F%2Furldefense.com%2Fv3%2F__http%3A%2F%2Fsecure-web.cisco.com%2F1qt_CFhQj-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniFI3aTWN$
>>  
>> <https://secure-web.cisco.com/1RQoxI0XTjBPqXfZzvc1ZRMyzN8cNVtinBcH79EZdkuRwfbKXZ15Cco0eRWOOfduJOAEgk2UnlSU2TTnOiH_LiNuABxA4FAVpazuwdhC1m74yD8_7htLKLkigwQjJ_Md1VjAwQ3-2P5bHXqZzB4Wm3YoRPdxTrxhAdZMZ1WJq5rsYFs-MiGM8ZcBC-vsPHqAYnH-CjkHd9hNJgqfdeqZwo1GvuYM_rp0RPUSE1K0_jTXIZIxzDAXxMrLEV7wToSAv_zGmf3u-U47FqQtVa9aEbni_89OfKM7eTx3QoPZh6nw-uDxmQROIqKa3-MEZXAtl/https%3A%2F%2Furldefense.com%2Fv3%2F__http%3A%2F%2Fsecure-web.cisco.com%2F1qt_CFhQj-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniFI3aTWN$>
>>  [secure-web[.]cisco[.]com]
>> cPS0IoqYopsBDgvFzzVoGNxSO3Ad4drRoaB_v_eTYomm1s6oNI4w9PiViRAyohV6k
>> DFdj-
>> SepFwktX8E6pb08AEUp92I8FGElQmgLt03vqN_Mk1RoivFyxgG9oC4txkYP5qBICyS
>> ndxhQ46IoOkYpvJ8fwaTLUxBdAZK-
>> FCKeolFPKmi0A5EESAmOs8Xia_B1gUCSAjamPDzvYZUCgMFEZYNBGrZdb3sb4Jw
>> BnJWjOMZPb965CX7JNg4M03vbE5cnaPoZZM32sdxFJe2qOapRaXiz0E15eRZMOT
>> hhB2iDKngK-gTS-AGR03/http%3A%2F%2Fwww.tango-rs.com%2Fepp%2Ftango-
>> idn-epp-extension.pdf
>> 
>> Registrant Name and Email Address:
>> Thomas Corte, [email protected] <mailto:[email protected]>
>> 
>> TLDs: Any
>> 
>> IPR Disclosure: None
>> 
>> Status: Active
>> 
>> Notes: None
>> 
>> -----END FORM-----
>> 
>> On Fri Sep 19 12:10:00 2025, [email protected] 
>> <mailto:[email protected]> wrote:
>>> Hello,
>>> 
>>> to whom it may concern: please review the EPP extension referenced in
>>> the form below and add it to the EPP Extension Registry at
>>> 
>>> https://secure-web.cisco.com/1vSgQL6FgEJ8uAs4eOsVkoofW2rqGwtI6rvgvtPV9PcakOFezPtv_S8W1nvbhuC_2xckScbc33TBVj6EoJNYJjO6A_9UcZVz6M4IjsmLWSpXWNxOgUWFCDC541sEkzV1nOrFWVuOnuKM_pSa5MTtDxdG6cbzoptebo6MmRAn5ZxRmlAhb2RsPKhZFh8mxcYDWoVyXgQV-H6zoKgWQiKcQssr27vffPbbevJubvMrEZOakzGyAXmDvin2ykf0qfBJYUGvVAW1_cPlUOA1FrhYoGAsE-hR6biPgPe7CoOHKoZAkdLj6ZRHGW_DC18g6NBq-/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fsecure-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniKnEovkF$
>>>  
>>> <https://secure-web.cisco.com/1vSgQL6FgEJ8uAs4eOsVkoofW2rqGwtI6rvgvtPV9PcakOFezPtv_S8W1nvbhuC_2xckScbc33TBVj6EoJNYJjO6A_9UcZVz6M4IjsmLWSpXWNxOgUWFCDC541sEkzV1nOrFWVuOnuKM_pSa5MTtDxdG6cbzoptebo6MmRAn5ZxRmlAhb2RsPKhZFh8mxcYDWoVyXgQV-H6zoKgWQiKcQssr27vffPbbevJubvMrEZOakzGyAXmDvin2ykf0qfBJYUGvVAW1_cPlUOA1FrhYoGAsE-hR6biPgPe7CoOHKoZAkdLj6ZRHGW_DC18g6NBq-/https%3A%2F%2Furldefense.com%2Fv3%2F__https%3A%2F%2Fsecure-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniKnEovkF$>
>>>  [secure-]
>> web.cisco.com/1z5h6Petk2WC5doU9HU4OXtixSOmGIsPWBAgbMkfE
>>> 
>> eyKnccr086dVQCj3N_2cQZoQh5TSiDjFCaOWu4Bp2Rb4L3OK_o5A7IUTLaKRsbxT
>> 7rjWBd
>>> YSzJzHjyRXjQob8mTqENySih-
>> oyjrOKb0G5QxrKvRmG_ha6hh4aIBav_vL1T81ehhfrRTi
>>> GsRZUO69tdeczM888KP-
>> MG8V2l4iAvjHJH2z2KExea9wRkbzObAEJo_EfWnGk4rtzBUt7r
>>> 
>> QUlLwyxTQA0VQ5wch349YTY7l19lC5xbioUcOvsUNsgS5lvKgkeQDXp59y_VUVdL
>> 2n7i-F
>>> /https%3A%2F%2Fwww.iana.org%2Fassignments%2Fepp-extensions%2Fepp-
>> exten
>>> sions.xhtml
>>> 
>>> at your earliest convenience.
>>> 
>>> -----BEGIN FORM-----
>>> Name of Extension:
>>> "IDN EPP Extension for the TANGO Registration System"
>>> 
>>> Document Status:
>>> Informational
>>> 
>>> Reference:
>>> https://secure-web.cisco.com/1RQoxI0XTjBPqXfZzvc1ZRMyzN8cNVtinBcH79EZdkuRwfbKXZ15Cco0eRWOOfduJOAEgk2UnlSU2TTnOiH_LiNuABxA4FAVpazuwdhC1m74yD8_7htLKLkigwQjJ_Md1VjAwQ3-2P5bHXqZzB4Wm3YoRPdxTrxhAdZMZ1WJq5rsYFs-MiGM8ZcBC-vsPHqAYnH-CjkHd9hNJgqfdeqZwo1GvuYM_rp0RPUSE1K0_jTXIZIxzDAXxMrLEV7wToSAv_zGmf3u-U47FqQtVa9aEbni_89OfKM7eTx3QoPZh6nw-uDxmQROIqKa3-MEZXAtl/https%3A%2F%2Furldefense.com%2Fv3%2F__http%3A%2F%2Fsecure-web.cisco.com%2F1qt_CFhQj-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniFI3aTWN$
>>>  
>>> <https://secure-web.cisco.com/1RQoxI0XTjBPqXfZzvc1ZRMyzN8cNVtinBcH79EZdkuRwfbKXZ15Cco0eRWOOfduJOAEgk2UnlSU2TTnOiH_LiNuABxA4FAVpazuwdhC1m74yD8_7htLKLkigwQjJ_Md1VjAwQ3-2P5bHXqZzB4Wm3YoRPdxTrxhAdZMZ1WJq5rsYFs-MiGM8ZcBC-vsPHqAYnH-CjkHd9hNJgqfdeqZwo1GvuYM_rp0RPUSE1K0_jTXIZIxzDAXxMrLEV7wToSAv_zGmf3u-U47FqQtVa9aEbni_89OfKM7eTx3QoPZh6nw-uDxmQROIqKa3-MEZXAtl/https%3A%2F%2Furldefense.com%2Fv3%2F__http%3A%2F%2Fsecure-web.cisco.com%2F1qt_CFhQj-__;!!PtGJab4!7tTiIf_2PjI2z_ei2JKF8G3-FEEFNqUKkQxm3R_e1BG1YXcS3ftU2r_hLiaPtk_a1HfVFSVb6LuquSRWR-asdezb60EHYSnniFI3aTWN$>
>>>  [secure-web[.]cisco[.]com]
>> cPS0IoqYopsBDgvFzzVoGNxSO3Ad4drR
>>> oaB_v_eTYomm1s6oNI4w9PiViRAyohV6kDFdj-
>> SepFwktX8E6pb08AEUp92I8FGElQmgLt
>>> 03vqN_Mk1RoivFyxgG9oC4txkYP5qBICySndxhQ46IoOkYpvJ8fwaTLUxBdAZK-
>> FCKeolF
>>> 
>> PKmi0A5EESAmOs8Xia_B1gUCSAjamPDzvYZUCgMFEZYNBGrZdb3sb4JwBnJWjO
>> MZPb965C
>>> X7JNg4M03vbE5cnaPoZZM32sdxFJe2qOapRaXiz0E15eRZMOThhB2iDKngK-
>> gTS-AGR03/
>>> http%3A%2F%2Fwww.tango-rs.com%2Fepp%2Ftango-idn-epp-extension.pdf
>>> 
>>> Registrant Name and Email Address:
>>> Thomas Corte, [email protected] <mailto:[email protected]>
>>> 
>>> TLDs: Any
>>> 
>>> IPR Disclosure: None
>>> 
>>> Status: Active
>>> 
>>> Notes: None
>>> -----END FORM-----
>>> 
>>> Best regards,
>>> 
>>> Thomas Corte
> 
> _______________________________________________
> regext mailing list -- [email protected] <mailto:[email protected]>
> To unsubscribe send an email to [email protected] 
> <mailto:[email protected]>


--
Gavin Brown
Principal Engineer, Global Domains & Strategy
Internet Corporation for Assigned Names and Numbers (ICANN)


https://secure-web.cisco.com/1IThgYzYfpQb3iozZLwNIY1nYyyU3xJkV8WXz1mSmTRbFZ8rTvYAl7knNeC8ce3L6ts_GsGNSBr-9GWry9TZx9oTIlMt4IjDOzQjnvCRefWV5bO5TQfsIjrxB5ocsLcyx13Iu_n2LjBDSi1jZnvzC8Lmi9GsxDs4lk1_lljQwCxt8dNRffvCkoBucOEMrynHQ1sIj9syY9cnCQz5bDJ8V1D_bGP_HpmhrCHNMylyoRVKp-jAFHHplkHceXEZYiMn2mp1HbqQtdxLVgjfEwFkaHxP_frz1TA7kJuPc5JxNIT4/https%3A%2F%2Fwww.icann.org
 
<https://secure-web.cisco.com/1IThgYzYfpQb3iozZLwNIY1nYyyU3xJkV8WXz1mSmTRbFZ8rTvYAl7knNeC8ce3L6ts_GsGNSBr-9GWry9TZx9oTIlMt4IjDOzQjnvCRefWV5bO5TQfsIjrxB5ocsLcyx13Iu_n2LjBDSi1jZnvzC8Lmi9GsxDs4lk1_lljQwCxt8dNRffvCkoBucOEMrynHQ1sIj9syY9cnCQz5bDJ8V1D_bGP_HpmhrCHNMylyoRVKp-jAFHHplkHceXEZYiMn2mp1HbqQtdxLVgjfEwFkaHxP_frz1TA7kJuPc5JxNIT4/https%3A%2F%2Fwww.icann.org>


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