Civil record (birth) in Belfast (Halpin)

[yfs]

Apologies if there is an obvious answer to this question - I'm new to Irish genealogy! I want to order the birth certificate of a John Michal Halpin, born AMJ 1920 in Belfast (I found an index record via family search and ancestry vol 1 / page 244 and a family member recalls his birthday as 6 May but has no other info). I am wanting to identify his parents and any other info.
However, the sites I have found for ordering a copy of the certificate require the mother's maiden name (I read somewhere that this was given in the index after 1903) - but the record I have found does not give this.
Can I still order the certificate?
Is there another index I can search which might provide the maiden name?
I'm also a little confused as to which is the best site to order a certificate via - there seem to be quite a few!
Any guidance would be appreciated, many thanks

[hallmark]

It might be online free.... irishgenealogy.com

[hallmark]

sory..not if it is less than 100 years ago!

[hallmark]

https://www.irishgenealogy.ie/en/civil-records/help/what-civil-records-are-on-line

[hallmark]

Have you tried looking for Marriage?

The years covered by the release of the historic Indexes to the Civil Records of Births, Marriages and Deaths are:

Births: 1864 to 1915

Marriages: 1845* to 1940

[hallmark]

you know father's name?

[yfs]

He didn't marry until 1951. (I have just ordered that certificate). And no, I have no other info at all except his full name and a probable date of birth 6/5/1920, no info about his father at all.

[familyroutes]

Do you know the names of any older siblings?

[Sinann]

You can get a photocopy of the birth cert for €4
https://www.irishgenealogy.ie/en/civil-records/help/i-want-to-get-a-copy-of-a-certificate-what-do-i-do
You don't need the mother's maiden name on this form just the index info

or check out Northern Ireland service
https://www.nidirect.gov.uk/services/go-groni-online