McMaster University
AS23237 is McMaster University (mcmaster.ca). It announces 66,048 IPv4 addresses in 4 prefixes, and 1 IPv6 prefixes.
Canada· ARIN· allocated 2002-02-13· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Canada66,048 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- MCMASTER
- name
- McMaster University
- org
- MU
- org name
- McMaster University
- org address
- 1280 Main St. West, Hamilton, ON, L8S-4M1
- org city
- Hamilton
- org country
- CA
- country
- CA
- source
- arin
- created
- 2002-02-13
- updated
- 2012-03-02
- abuse name
- Mike Diggins
- abuse email
- mike.diggins@mcmaster.ca
- abuse phone
- +1-905-525-9140
- abuse kind
- person
- abuse city
- Hamilton
- abuse country
- CA
- admin name
- Mike Diggins
- admin email
- mike.diggins@mcmaster.ca
- admin phone
- +1-905-525-9140
- admin kind
- person
- admin city
- Hamilton
- admin country
- CA
- tech name
- Mike Diggins
- tech email
- mike.diggins@mcmaster.ca
- tech phone
- +1-905-525-9140
- tech kind
- person
- tech city
- Hamilton
- tech country
- CA
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- 0.01%
- geonode, anyip, privateproxy_me0.22%
- None here
- None here
- None here
- None here
- Hosting IP5120.78%
- None here
- None here
- None here
- SSH IP180.03%
- 0.00%
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 130.113.0.0/16 | Canada | not found | 19 | 2026-10-02 |
| 130.113.109.0/24 | Canada | not found | 19 | 2026-10-02 |
| 192.42.5.0/24 | Canada | not found | 19 | 2026-10-02 |
| 192.42.6.0/24 | Canada | not found | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2604:1700::/48 | Canada | not found | 20 | 2026-10-02 |
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