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InternetData
IPv4 address

23.100.18.134

An address in Dulles Town Center, Virginia, United States, announced by Microsoft Corporation (AS8075). It's hosting space of Microsoft Azure, an SSH server on port 22, a mail server on port 587, and a DNS server on port 53.

Summary

Geolocation
Dulles Town Center, Virginia
Ownership
23.100.0.0/15
smtp.risermedspa.com
  • HostingMicrosoft Azure

No mobile carrier, anycast or CDN

  • SSHPort 22
  • SMTPPort 587
  • DNS ResolverPort 53

Geolocation

Where the address is, and what that place uses.

City
Dulles Town Center
Region
Virginia
Postal code
20164
Continent
North America
Timezone
America/New_York

Ownership

Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.

Company
Microsoft Corporation
Domain
microsoft.com
Type
Hosting
Registered in
United States
AS number
AS8075
Name
Microsoft Corporation
Prefix
23.100.0.0/15
RPKI
Valid
Type
Hosting
Domain
microsoft.com
Registered in
United States
Name
Microsoft Corporation
Network name
MSFT
Organization
MSFT
Status
allocation
Registry
ARIN
Domain
microsoft.com
Name
Microsoft Abuse Contact
Phone
+1-425-882-8080
Address
One Microsoft Way, Redmond, WA, 98052
Network
23.96.0.0-23.103.255.255
Hostname
smtp.risermedspa.com
Not seen inIP RWHOIS

Anonymity

Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.

Provider
Microsoft Azure
Confidence
High
Last seen
2026-10-24

Network

What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.

Services

What our own internet-wide measurement found listening on it.

Port
22
Banner
SSH-2.0-OpenSSH_8.9p1
Host key
SHA256:051fde71388be47c8ea67578b41881ec368151a3def6700b5a7eaf025d228a20
Handshake
Completed
First seen
2026-08-17
Last seen
2026-09-18
Port
587
Banner
220 smtp.risermedspa.com ESMTP Postfix
Greeting
Completed
First seen
2026-08-17
Last seen
2026-09-14
Port
53
Recursion
Refused
Response code
5
Answer
Wrong
First seen
2026-08-24
Last seen
2026-09-11
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