Microsoft Corporation
AS3598 is Microsoft Corporation (microsoft.com). It announces 531,200 IPv4 addresses in 18 prefixes, and 5 IPv6 prefixes.
United States· ARIN· allocated 1994-05-18· hosting
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States513,752 · 96.72%
- United Kingdom8,344 · 1.57%
- Singapore3,712 · 0.70%
- Australia1,024 · 0.19%
- Israel1,024 · 0.19%
- India1,024 · 0.19%
- Ireland912 · 0.17%
- Japan896 · 0.17%
- Germany512 · 0.10%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- MICROSOFT-CORP-AS
- name
- Microsoft Corporation
- org
- MSFT
- org name
- Microsoft Corporation
- org address
- One Microsoft Way, Redmond, WA, 98052
- org city
- Redmond
- org country
- US
- country
- US
- source
- arin
- created
- 1994-05-18
- updated
- 2013-08-20
- abuse name
- Microsoft Abuse Contact
- abuse email
- abuse@microsoft.com
- abuse phone
- +1-425-882-8080
- abuse kind
- role
- abuse city
- Redmond
- abuse country
- US
- admin name
- IPHostmaster IPHostmaster
- admin email
- iphostmaster@microsoft.com
- admin phone
- +1-425-538-6637
- admin kind
- person
- admin city
- Redmond
- admin country
- US
- tech name
- Dawn Bedard
- tech email
- dabedard@microsoft.com
- tech phone
- +1-425-538-6637
- tech kind
- person
- tech city
- Redmond
- tech country
- US
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.
- VPN IP120.00%
- anyip, geonode, smartproxy0.01%
- None here
- None here
- None here
- None here
- Hosting IP531,200azure100.00%
- None here
- None here
- None here
- None here
- None here
- 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 |
|---|---|---|---|---|
| 65.53.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 131.107.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 157.54.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 157.57.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 157.58.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 157.58.192.0/19 | United States | valid | 17 | 2026-10-02 |
| 157.59.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 157.60.0.0/16 | United States | valid | 17 | 2026-10-02 |
| 167.220.0.0/16 | United States | not found | 17 | 2026-10-02 |
| 167.220.0.0/17 | United States | valid | 17 | 2026-10-02 |
| 167.220.128.0/18 | United States | valid | 17 | 2026-10-02 |
| 167.220.192.0/19 | Ireland | valid | 17 | 2026-10-02 |
| 167.220.204.0/22 | Israel | valid | 17 | 2026-10-02 |
| 167.220.208.0/23 | Germany | valid | 17 | 2026-10-02 |
| 167.220.224.0/19 | Singapore | not found | 17 | 2026-10-02 |
| 194.69.96.0/19 | United Kingdom | valid | 17 | 2026-10-02 |
| 194.69.100.0/22 | United Kingdom | valid | 17 | 2026-10-02 |
| 198.105.232.0/22 | United States | valid | 17 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2001:4898::/32 | United States | valid | 20 | 2026-10-02 |
| 2404:f801::/32 | Singapore | valid | 20 | 2026-10-02 |
| 2a01:110::/32 | United Kingdom | valid | 20 | 2026-10-02 |
| 2a01:110:8020::/48 | Germany | valid | 20 | 2026-10-02 |
| 2a01:110:8068::/48 | Israel | valid | 20 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.