Co. Dublin, Ireland — 02 Mar. 2006

We hereby give notice pursuant to Part VI of the Companies Act 1985 (the “Act”)
that the number of shares in the company which we know we are interested in, as
contained in earlier notifications to the Company have changed and the identity
of the registered holder and the number of shares held by them, which we are
interested in, is now:

Name No. of Shares

Vidacos Nominees Limited 253,422,839

18,265,144 of the shares to which this notification relates are shares in which
we are interested by virtue of Sections 204 and 205 of the Act.

Letter from Eamon Holdings Pty Ltd.

Letter to Eircom Group Plc
Letter dated 01 March 2006

Disclosure of Interests

We hereby give notice pursuant to Part VI of the Companies Act 1985 (the “Act”)
that the number of shares in the company which we know we are interested in, as
contained in earlier notifications to the Company have changed and the identity
of the registered holder and the number of shares held by them, which we are
interested in, is now:

Name No. of Shares

Vidacos Nominees Limited 253,422,839

245,120,487 of the shares to which this notification relates are shares in which
we are interested by virtue of Sections 204 and 205 of the Act.

Letter from BBGP Eamon Holdings Limited

Letter to Eircom Group Plc
Letter dated 01 March 2006

Disclosure of Interests

We hereby give notice pursuant to Part VI of the Companies Act 1985 (the “Act”)
that the number of shares in the company which we know we are interested in, as
contained in earlier notifications to the Company have changed and the identity
of the registered holder and the number of shares held by them, which we are
interested in, is now:

Name No. of Shares

Vidacos Nominees Limited 253,422,839

250,101,906 of the shares to which this notification relates are shares in which
we are interested by virtue of Sections 204 and 205 of the Act.

Letter from Babcock & Brown Direct Investment Fund Ltd.

Letter to Eircom Group Plc
Letter dated 01 March 2006

Disclosure of Interests

We hereby give notice pursuant to Part VI of the Companies Act 1985 (the “Act”)
that the number of shares in the company which we know we are interested in, as
contained in earlier notifications to the Company have changed and the identity
of the registered holder and the number of shares held by them, which we are
interested in, is now:

Name No. of Shares

Vidacos Nominees Limited 253,422,839

246,780,980 of the shares to which this notification relates are shares in which
we are interested by virtue of Sections 204 and 205 of the Act.

Letter from Eamon Holdings (no.2) Pty Ltd