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Internet Service Providers in Ireland
List of the top 20 organizations with the largest IP allocations in Ireland
Rank
Name
IPv4 addresses
IPv6 /64 networks
AS numbers
Prefixes
HEAnet
1,843,200
2
32
1
18
Vodafone Ireland Limited
1,299,968
0
1
264
Eircom Limited
1,111,552
2
35
1
31
4
Amazon Data Services Ireland Ltd
537,600
1.6 x 2
29
1
61
5
Imagine Communications Group Limited
495,872
2
32
1
70
6
BT Communications Ireland Limited
437,760
1.13 x 2
35
2
15
7
Three Ireland (Hutchison) limited
242,432
0
1
68
8
Digiweb ltd
209,152
1.5 x 2
34
4
41
9
Coolwave Communications Limited
155,648
0
1
3
10
Magnet Networks Limited
124,160
1.25 x 2
35
2
26
11
University College Dublin
65,536
0
1
1
12
Fulnett Limited
43,264
2
32
1
10
13
Sungard Availability Services (Ireland) Ltd.
35,072
2
32
1
10
14
Blacknight Internet Solutions Limited
34,560
1.88 x 2
35
2
43
15
ServeCentric Ltd.
32,768
0
1
1
16
Enet Telecommunications Networks Limited
29,952
1.03 x 2
35
1
53
17
Irish Government
26,368
2
32
2
24
18
Meteor Mobile Communications Limited
24,832
2
32
1
8
19
Google Ireland Limited
21,760
2
24
1
7
20
Afilias Ltd
19,968
1.22 x 2
22
2
156