Host Profile
usg02.safelinks.protection.office365.us
fqdnoffice365.us
1
IPs
3
Tech
1
Certs
0
Cookies
28
Headers
1
MIME
0
Incoming
1
Outgoing
First Seen
2019-04-11 02:19:53
Last Seen
2026-08-26 00:02:40
Times Seen
5
Registered
2010-04-19 00:00:00
Subdomain
usg02.safelinks.protection
IP Addresses
1| IP | ASN | AS Name | Country | First Seen | Last Seen | Seen |
|---|---|---|---|---|---|---|
| 23.103.191.83 | AS8075 | MICROSOFT-CORP-MSN-AS-BLOCK |  US | 2026-08-24 00:03:38 | 2026-08-26 00:02:40 | 5 |
Technologies
3HSTS (Security)
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
https://www.rfc-editor.org/rfc/rfc6797#section-6.1First2026-08-24 00:03:38
Last2026-08-26 00:02:40
Seen5
First2026-08-24 00:03:38
Last2026-08-26 00:02:40
Seen5
First2026-08-24 00:03:38
Last2026-08-26 00:02:40
Seen5
Certificates
1Subject CN*.safelinks.protection.office365.us
Subject Orgunknown
Issuer CNMicrosoft TLS G2 RSA CA OCSP 02
Issuer OrgMicrosoft Corporation
Valid From2026-07-28 06:34:12
Valid To2027-02-11 06:34:12
Cookies
0No cookie observations available.
HTTP Headers
28content-type x5
date x5
ms-cv x5
request-id x5
server x5
x-feserver x5
x-msedge-ref x5
x-nanoproxy x5
x-robots-tag x5
x-serverlat x5
x-servername x5
location x1
MIME Types
1Seen 5 times
Relations
redirects to: source redirected the browser to target.
loads from: source loaded scripts, images, stylesheets, fonts, media, or similar resources from target.
calls: source made active requests to target, such as fetch, XHR, beacon, websocket, or eventsource.
embeds: source embedded target in a frame, iframe, object, or embed.
Hosts observed redirecting, loading, calling, or embedding one another.
| Source | Relation | Target | First Seen | Last Seen | Seen |
|---|---|---|---|---|---|
| usg02.safelinks.protection.office365.us | redirects to | substack.com | 2026-08-24 00:03:38 | 2026-08-24 00:03:38 | 1 |