1. All IP Ranges
  2. 40.0.0.0/8
  3. 40.66.0.0/16
  4. AS8075  | 40.66.0.0/17

40.66.0.0/17

AS8075  ·  Microsoft Corporation

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Summary

Country United States
Domain microsoft.com
ASN AS8075
Registry ARIN
ID MSFT

WHOIS Details

NetHandle:      NET-40-64-0-0-1
OrgID:          MSFT
Parent:         NET-40-0-0-0-0
NetName:        MSFT
NetRange:       40.64.0.0 - 40.71.255.255
NetType:        allocation
RegDate:        2015-02-23
Updated:        2021-12-14
Source:         ARIN


OrgID:          MSFT
OrgName:        Microsoft Corporation
CanAllocate:    
Street:         One Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
Comment:        To report suspected security issues specific to traffic emanating from Microsoft online services, including the distribution of malicious content or other illicit or illegal material through a Microsoft online service, please submit reports to:
Comment:        * https://cert.microsoft.com.  
Comment:        For SPAM and other abuse issues, such as Microsoft Accounts, please contact:
Comment:        * [email protected].  
Comment:        To report security vulnerabilities in Microsoft products and services, please contact:
Comment:        * [email protected].  
Comment:        For legal and law enforcement-related requests, please contact:
Comment:        * [email protected]
Comment:        For routing, peering or DNS issues, please 
Comment:        contact:
Comment:        * [email protected]
RegDate:        1998-07-10
Updated:        2025-06-10
OrgAdminHandle: IPHOS5-ARIN
OrgTechHandle:  BEDAR6-ARIN
OrgTechHandle:  IPHOS5-ARIN
OrgTechHandle:  MRPD-ARIN
OrgTechHandle:  SINGH683-ARIN
OrgAbuseHandle: MAC74-ARIN
OrgRoutingHandle:   CHATU3-ARIN
Source:         ARIN


POCHandle:      MRPD-ARIN
IsRole:         Y
LastName:       Microsoft Routing, Peering, and DNS
FirstName:      
Street:         One Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2013-08-20
Updated:        2025-10-16
OfficePhone:    +1-425-882-8080
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      SINGH683-ARIN
IsRole:         N
LastName:       Singh
FirstName:      Prachi
Street:         1 Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2023-06-13
Updated:        2023-07-11
OfficePhone:    +1-425-707-5601
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      MAC74-ARIN
IsRole:         Y
LastName:       Microsoft Abuse Contact
FirstName:      
Street:         One Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2013-08-20
Updated:        2025-06-10
OfficePhone:    +1-425-882-8080
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      IPHOS5-ARIN
IsRole:         N
LastName:       IPHostmaster
FirstName:      IPHostmaster
Street:         One Microsoft Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     20147
RegDate:        2021-10-13
Updated:        2025-10-21
OfficePhone:    +1-425-538-6637
Mailbox:        [email protected]
Source:         ARIN


POCHandle:      BEDAR6-ARIN
IsRole:         N
LastName:       Bedard
FirstName:      Dawn
Street:         1 Redmond Way
City:           Redmond
State/Prov:     WA
Country:        US
PostalCode:     98052
RegDate:        2016-10-20
Updated:        2025-08-19
OfficePhone:    +1-425-538-6637
Mailbox:        [email protected]
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 40.66.0.0/16

No nearby ranges found.

Hosted domains

There are 1,494 domain names hosted across 121 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
40.66.56.0 aihb-immobilier-montreal.com 850
40.66.60.99 idouane.fr 106
40.66.60.31 loamics.uk 85
40.66.56.117 em-lyon.com 67
40.66.33.30 cytubemajor.org 52
40.66.43.140 tcmoto.be 46
40.66.33.45 bouygues-immobilier.com 41
40.66.59.167 chocolat-deneuville.eu 19
40.66.41.92 lifestylemeals.co.za 17
40.66.40.106 isio4.biz 12
40.66.49.44 monespaceclient.immo 11
40.66.42.171 yelumseguros.xyz 7
40.66.56.171 querlo.info 7
40.66.41.185 jeudeleau.fr 6
40.66.60.30 beneylu.com 6
40.66.63.143 prodevisstart.fr 5
40.66.45.175 excelitylab.com 4
40.66.63.186 letsign.it 4
40.66.41.59 dmd-slovenija.si 4
40.66.60.227 beatphil.co.uk 4

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

1,678 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
40.66.114.3 AS8075 Microsoft Corporation 0.59ms from London, GB
40.66.34.68 AS8075 Microsoft Corporation 0.60ms from Paris, FR
40.66.17.130 AS8075 Microsoft Corporation 1.64ms from San Antonio, US
40.66.36.63 AS8075 Microsoft Corporation 0.48ms from Paris, FR
40.66.0.63 AS8075 Microsoft Corporation 0.35ms from Vienna, AT
40.66.63.157 AS8075 Microsoft Corporation 0.83ms from Paris, FR
40.66.68.2 AS8075 Microsoft Corporation 3.74ms from Dubai, AE
40.66.22.200 AS8075 Microsoft Corporation 0.66ms from Boydton, US
40.66.1.122 AS8075 Microsoft Corporation 0.62ms from Boydton, US
40.66.5.146 AS8075 Microsoft Corporation 26.62ms from Dublin, IE
40.66.100.33 AS8075 Microsoft Corporation 0.43ms from Osaka, JP
40.66.88.3 AS8075 Microsoft Corporation 0.94ms from San Jose, US
40.66.31.168 AS8075 Microsoft Corporation 0.70ms from Boydton, US
40.66.37.3 AS8075 Microsoft Corporation 1.88ms from Paris, FR
40.66.46.61 AS8075 Microsoft Corporation 0.39ms from Paris, FR
40.66.27.136 AS8075 Microsoft Corporation 19.41ms from San Antonio, US
40.66.12.1 AS8075 Microsoft Corporation 0.78ms from Sydney, AU
40.66.29.66 AS8075 Microsoft Corporation 0.69ms from Boydton, US
40.66.35.11 AS8075 Microsoft Corporation 0.41ms from Paris, FR
40.66.41.192 AS8075 Microsoft Corporation 0.39ms from Paris, FR
40.66.57.45 AS8075 Microsoft Corporation 0.79ms from Paris, FR
40.66.42.232 AS8075 Microsoft Corporation 0.37ms from Paris, FR
40.66.66.2 AS8075 Microsoft Corporation 0.37ms from Quincy, US
40.66.98.129 AS8075 Microsoft Corporation 0.65ms from San Jose, US
40.66.54.25 AS8075 Microsoft Corporation 0.83ms from Paris, FR

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
195.154.56.33 AS12876 SCALEWAY S.A.S. 0.26ms from Amsterdam, NL
45.140.212.1 AS212477 RoyaleHosting BV 0.67ms from Amsterdam, NL
94.214.4.1 AS33915 Vodafone Libertel B.V. 3.88ms from Amsterdam, NL
89.99.249.1 AS33915 Vodafone Libertel B.V. 4.36ms from Amsterdam, NL
206.205.88.129 AS2828 Verizon Business 3.23ms from Ashburn, US
50.144.23.161 AS7922 Comcast Cable Communications, LLC 14.09ms from Atlanta, US
200.119.125.49 AS19429 ETB - Colombia 0.82ms from Bogota, CO
70.22.145.1 AS701 Verizon Business 1.17ms from Boston, US
2.81.239.1 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 1.21ms from Braga, PT
83.217.132.1 AS6848 Telenet BV 2.21ms from Brussels, BE
184.64.164.1 AS6327 Shaw Communications 1.28ms from Calgary, CA
35.206.199.113 AS19527 Google LLC 0.14ms from Chang-hua, TW
208.102.72.1 AS6181 Cincinnati Bell Telephone Company LLC 2.27ms from Cincinnati, US
191.201.90.1 AS26599 TELEFÔNICA BRASIL S.A 7.76ms from Curitiba, BR
74.231.122.1 AS35986 Vyve Broadband 2.64ms from Dallas, US
38.92.2.1 AS393737 Cpuonsite 18.77ms from Dallas, US
73.95.239.161 AS7922 Comcast Cable Communications, LLC 3.29ms from Denver, US
45.92.0.1 AS216025 Mullvad VPN AB 1.93ms from Falkenberg, SE
71.227.19.161 AS7922 Comcast Cable Communications, LLC 10.35ms from Flint, US
45.150.152.1 AS208236 Adrian Reyer 0.80ms from Frankfurt am Main, DE
120.37.130.1 AS4134 CHINANET-BACKBONE 4.89ms from Fuzhou, CN
113.98.141.1 AS4134 CHINANET-BACKBONE 4.45ms from Guangzhou, CN
205.174.162.17 AS3367 Xplore Inc. 6.84ms from Halifax, CA
125.212.228.33 AS38731 Vietel - CHT Compamy Ltd 0.76ms from Hanoi, VN
116.102.9.1 AS24086 Viettel Corporation 2.03ms from Ho Chi Minh City, VN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

$
traceroute -a -n -q1 -f7 -m11 40.66.18.145
traceroute to 40.66.18.145 (40.66.18.145): 11 hops max, 52 byte packets
7 [AS8075] 104.44.6.81 6.83 ms
8 [AS8075] 104.44.53.214 53.312 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Bangkok, TH
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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