Change notification for EOP IP addresses

This topic describes the updates that have been made to the IP addresses used by Microsoft Exchange Online Protection (EOP). For a complete list of the IP addresses used in EOP, see Exchange Online Protection IP addresses.

Description of revisions

The following table specifies the IP addresses that have been added, changed, or deprecated in the past year:

Revision date Description of revision
July 9, 2014
Added 94.245.120.64/26 to the list of IP addresses.
December 1, 2014
Added the following IP addresses.
64.4.22.64/2665.55.169.0/2465.55.83.128/27134.170.132.0/24134.170.140.0/24134.170.171.0/24157.55.133.160/27157.55.158.0/23157.55.234.0/24157.55.206.0/23157.56.73.0/24157.56.87.192/26157.56.108.0/24157.56.110.0/24157.56.111.0/24157.56.112.0/24157.56.206.0/24157.56.208.0/22207.46.100.0/24207.46.101.128/26``````23.103.132.0/2323.103.134.0/2323.130.156.0/2223.103.144.0/19104.47.0.0/1723.103.198.0/2323.103.200.0/2123.103.191.0/242a01:111:f400:fc00::/54
January 13, 2015
Minor adjustments to the list published in December (23.103.132.0/23 -> change to 23.103.132.0/22, 23.103.134.0/23 -> remove (included in other ranges), 23.103.144.0/19 -> change to 23.103.144.0/22, 23.130.156.0/22 -> change to 23.103.136.0/21).
March 17, 2015
Of the new Office 365 range (40.96.0.0/12), Exchange Online Protection has been allocated one range. Exchange Online Protection will wait 30+ days before deploying capacity to the following end points. 40.107.0.0/16
May 26, 2015
Added regional specific ranges for clarity.
February 24, 2016
Added 134.170.101.0/24 157.56.116.0/25 207.46.108.0/25 157.56.110.0/23 157.56.120.0/25 157.55.234.0/24. Notes: To the complete EOP IP List.
Removed 23.103.148.0/22 207.46.163.128/26 207.46.163.192/27 207.46.163.224/27 23.103.145.128/27 23.103.145.192/27 213.199.154.0/26 213.199.154.64/26 213.199.154.128/27 207.46.51.64/27 207.46.51.96/27 134.170.132.0/24 Notes: From regional listings, these were duplicates or are no longer in use.
Notes: Fixed 23.103.144.0/22 to 23.103.144.0/20 & Fixed 157.55.133.160/27 to 157.55.133.0/25.
June 1, 2016
Added 216.32.180.0/23 & removed 157.56.111.0/24
June 21, 2016
Effective 8/1/2016. Required: Skype for Business Online. ExpressRoute: Yes. 216.32.180.0/24
Effective 8/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 216.32.181.0/24
October 24th, 2016
Going forward, please refer to the Office 365 endpoints feed to track changes.
Removing 42 IP_Sets; 1/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.144.0/20], 2/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.198.0/23], 3/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.200.0/21], 4/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.92.0.0/14], 5/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.107.0.0/16], 6/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 65.55.169.0/24], 7/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 134.170.101.0/24], 8/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 134.170.140.0/24], 9/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 134.170.171.0/24], 10/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.133.0/25], 11/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.87.192/26], 12/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.110.0/23], 13/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.112.0/24], 14/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.116.0/25], 15/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.120.0/25], 16/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.51.64/26], 17/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.100.0/24], 18/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.108.0/25], 19/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 2a01:111:f400:fc00::/54], 20/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.148.0/22], 21/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.191.0/24], 22/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 64.4.22.64/26], 23/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 65.55.169.0/24], 24/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.133.0/25], 25/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.158.0/23], 26/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.87.192/26], 27/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.110.0/23], 28/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.100.0/24], 29/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.101.128/26], 30/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.108.0/25], 31/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 216.32.181.0/24], 32/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.144.0/22], 33/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 94.245.120.64/26], 34/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 104.47.0.0/19], 35/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.112.0/24], 36/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.116.0/25], 37/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.120.0/25], 38/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.234.0/24], 39/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.152.0/22], 40/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.155.0/27], 41/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.155.64/27], 42/[Effective 12/1/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 104.47.64.0/19]. Notes: Removing IP addresses decommissioned as part of our consolidation effort.
November, 21 2016
Adding 13 FQDNs; 1/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.82.0.0/14], 2/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.92.0.0/14], 3/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.107.0.0/16], 4/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 65.55.169.0/24], 5/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 94.245.120.64/26], 6/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 134.170.132.0/24], 7/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 134.170.140.0/24], 8/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.133.0/25], 9/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.234.0/24], 10/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.110.0/23], 11/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 157.56.112.0/24], 12/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.51.64/26], 13/[Effective 11/21/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 207.46.100.0/24]. Notes: Adding back several IP ranges that were removed prematurely.
November, 28 2016
Removing 1 FQDNs; 1/[Effective 11/28/2016. Required: Exchange Online Protection. ExpressRoute: Yes. 40.82.0.0/14]. Notes: Removing range erroneously added.
December 23 2016
Notes: Updated CIDR notation for APAC and Americas, from 52.100.2.0/15 to 52.100.0.0/15 and from 52.100.1.0/16 to 52.100.0.0/16.
February 28 2017
Several IP ranges are being added, you'll notice some overlap in the ranges - this is to ensure the new ranges have been advertised over ExpressRoute before we remove the broader or narrower range that was replaced by the additions this month.
Adding 4 IP_Sets; 1/[Effective 4/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.144.0/20], 2/[Effective 4/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 40.107.0.0/17], 3/[Effective 4/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 40.107.128.0/18], 4/[Effective 4/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 52.100.0.0/14]. Notes: Updating IP ranges for EOP - these ranges are replacing several that will be removed during the March update. Adding 16 IP_Sets; 1/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 23.103.148.0/22], 2/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 23.103.200.0/22], 3/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 23.103.212.0/22], 4/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 40.92.64.0/18], 5/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 40.93.64.0/18], 6/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 40.94.64.0/18], 7/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 40.95.64.0/18], 8/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 40.107.64.0/18], 9/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 52.100.64.0/18], 10/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 52.101.64.0/18], 11/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 52.102.64.0/18], 12/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 52.103.64.0/18], 13/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 65.55.169.0/24], 14/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 104.47.32.0/19], 15/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 157.56.110.0/23], 16/[Effective 4/1/2017. Required: Exchange Online Protection - Americas Region. ExpressRoute: Yes. 207.46.100.0/24]. Notes: Regional IP ranges for EOP - Americas. Adding 13 IP_Sets; 1/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 23.103.144.0/22], 2/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 40.92.0.0/18], 3/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 40.93.0.0/18], 4/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 40.94.0.0/18], 5/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 40.95.0.0/18], 6/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 40.107.0.0/18], 7/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 52.100.0.0/18], 8/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 52.101.0.0/18], 9/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 52.102.0.0/18], 10/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 52.103.0.0/18], 11/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 104.47.0.0/19], 12/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 157.55.234.0/24], 13/[Effective 4/1/2017. Required: Exchange Online Protection - EMEA Region. ExpressRoute: Yes. 157.56.112.0/24]. Notes: Regional IP ranges for EOP - EMEA. Adding 13 IP_Sets; 1/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 23.103.152.0/22], 2/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 40.92.128.0/17], 3/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 40.93.128.0/17], 4/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 40.94.128.0/17], 5/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 40.95.128.0/17], 6/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 40.107.128.0/18], 7/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 52.100.128.0/17], 8/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 52.101.128.0/17], 9/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 52.102.128.0/17], 10/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 52.103.128.0/17], 11/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 134.170.132.0/24], 12/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 134.170.140.0/24], 13/[Effective 4/1/2017. Required: Exchange Online Protection - APAC Region. ExpressRoute: Yes. 207.46.51.64/26]. Notes: Regional IP ranges for EOP - APAC.
March 31, 2017
Adding 4 IP_Sets; 1/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.191.0/24], 2/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.198.0/23], 3/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 23.103.199.0/24], 4/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 104.212.58.0/23]. Notes: Adding endpoints for Exchange Online Protection.
Removing 3 IP_Sets; 1/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 40.107.0.0/16], 2/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 157.55.133.0/25], 3/[Effective 5/1/2017. Required: Exchange Online Protection. ExpressRoute: Yes. 104.47.0.0/17]. Notes: Removing endpoints for Exchange Online Protection.
June 1, 2017
Removing 2 IP_Sets Effective 7/1/2017
23.103.198.0/24
23.103.198.0/23
June 30, 2017
Removing 1 IP_Sets Effective 8/1/2017
23.103.156.0/22
August 31, 2017
Effective 10/1/2017 for worldwide: Adding 2a01:111:f400:fc00::/54 and removing 104.212.58.0/23, 23.103.191.0/24.
Effective 10/1/2017 for Americas only: Adding 23.103.132.0/22, 23.103.136.0/21, 23.103.152.0/21, 2a01:111:f400:7c00::/54 and removing 2a01:111:f400:7d00::/57, 2a01:111:f400:7e40::/58.
Effective 10/1/2017 for EMEA only: Adding 2a01:111:f400:7e00::/56, 2a01:111:f400:fe00::/56 and removing 2a01:111:f400:7e00::/58.
Effective 10/1/2017 for APAC only: Adding 2a01:111:f400:7c00::/54 and removing 2a01:111:f400:7e80::/57.
Clarifying: 40.107.0.0/16 was only removed from the Americas section and replaced by 104.47.32.0/19. 40.107.0.0/16 remains in place in the main list. 23.103.198.0/23 remains in place for WW.