Slack Application

The following page provides details on domains, networks, IPs, hosting services, and content delivery networks used by Slack.

What is Slack?

Slack - Business
Slack is where work flows. It's where the people you need, the information you share, and the tools you use come together to get things done.

Slack Domains

Primary Domains

Platform Domains

Platform	Sample Domain	Details
Fastly	{hidden}.fastly.net
Zendesk	{hidden}.zendesk.com	and 1 more

SaaS - Software-as-a-Service

SaaS	Sample IP	# of IPs
Zendesk	216.198.53.11	2

Slack use the third-party SaaS platforms shown here. These services typically manage authentication, advertising, cybersecurity, e-mail services and more.

Hosting

SaaS	Sample IP	# of IPs
Amazon AWS	52.192.46.121	218
NetActuate	45.54.67.1	4

To scale its compute capacity and optimize resources, Slack leverages a multi-cloud architecture.

Content Delivery Networks - CDNs

Summary

CDN	Sample IP	# of IPs
Amazon CloudFront	143.204.55.24	1238
Fastly	199.232.188.106	329

To get information to end users more quickly, many apps - including Slack - use Content Delivery Networks (CDNs).

Anycast

CDN	Sample IP	# of IPs
Fastly	151.101.60.106	116

Network Map

PoP Locations

CDN	Location	PoP	Network	# of IPs
Fastly	Sofia	Bulgaria	Fastly	2
Fastly	Fortaleza	Brazil	Fastly	2
Fastly	Detroit	United States	Fastly	2
Fastly	Christchurch	New Zealand	Fastly	2
Fastly	Manila	Philippines	Fastly	2
Fastly	Kuala Lumpur	Malaysia	Fastly	2
Fastly	Ashburn	United States	Fastly	6
Fastly	Seattle	United States	Fastly	4
Fastly	Singapore	Singapore	Fastly	4
Fastly	Seoul	South Korea	Fastly	2
Fastly	Milan	Italy	Fastly	4
Fastly	Rome	Italy	Fastly	2
Fastly	Dubai	United Arab Emirates	Fastly	2
Fastly	London	United Kingdom	Fastly	6
Fastly	Chicago	United States	Fastly	6
Fastly	Gainesville	United States	Fastly	2
Fastly	Lisbon	Portugal	Fastly	2
Fastly	Los Angeles	United States	Fastly	8
Fastly	Honolulu	United States	Fastly	2
Fastly	Adelaide	Australia	Fastly	2
Fastly	Dallas	United States	Fastly	6
Fastly	Calgary	Canada	Fastly	2
Fastly	Tokyo	Japan	Fastly	8
Fastly	Frankfurt	Germany	Fastly	4
Fastly	Miami	United States	Fastly	2
Fastly	Brussels	Belgium	Fastly	2
Fastly	Atlanta	United States	Fastly	6
Fastly	Sydney	Australia	Fastly	4
Fastly	Amsterdam	Netherlands	Fastly	2
Fastly	San Jose	United States	Fastly	6
Fastly	New York	United States	Fastly	8
Fastly	Hong Kong	Hong Kong	Fastly	2
Fastly	Melbourne	Australia	Fastly	2
Fastly	Osaka	Japan	Fastly	2
Fastly	Sao Paulo	Brazil	Fastly	4
Fastly	Boston	United States	Fastly	2
Fastly	Paris	France	Fastly	4
Fastly	Toronto	Canada	Fastly	2
Fastly	Madrid	Spain	Fastly	4
Fastly	Montreal	Canada	Fastly	13
Fastly	Fujairah	United Arab Emirates	Fastly	2
Fastly	Columbus	United States	Fastly	2
Fastly	Minneapolis	United States	Fastly	4
Fastly	Auckland	New Zealand	Fastly	2
Fastly	Johannesburg	South Africa	Fastly	4
Fastly	Rio de Janeiro	Brazil	Fastly	2
Fastly	Houston	United States	Fastly	2
Fastly	Vancouver	Canada	Fastly	2
Fastly	Buenos Aires	Argentina	Fastly	2
Fastly	Santiago	Chile	Fastly	2
Fastly	Cape Town	South Africa	Fastly	2
Fastly	Wellington	New Zealand	Fastly	2
Fastly	Oslo	Norway	Fastly	2
Fastly	Helsinki	Finland	Fastly	2
Fastly	Mumbai	India	Fastly	2
Fastly	New Delhi	India	Fastly	4
Fastly	Vienna	Austria	Fastly	2
Fastly	Dublin	Ireland	Fastly	2
Fastly	Copenhagen	Denmark	Fastly	2
Fastly	Manchester	United Kingdom	Fastly	2
Fastly	Denver	United States	Fastly	2
Fastly	St Louis	United States	Fastly	2
Fastly	Kansas City	United States	Fastly	2
Fastly	Marseille	France	Fastly	2
Fastly	Newark	United States	Fastly	2
Fastly	Hyderabad	India	Fastly	2
Fastly	Portland	United States	Fastly	2
Fastly	Phoenix	United States	Fastly	2
Fastly	Munich	Germany	Fastly	2
Amazon CloudFront	Columbus	United States	Amazon CloudFront	21
Amazon CloudFront	Dubai	United Arab Emirates	Amazon CloudFront	8
Amazon CloudFront	Buenos Aires	Argentina	Amazon CloudFront	8
Amazon CloudFront	Lisbon	Portugal	Amazon CloudFront	16
Amazon CloudFront	Frankfurt	Germany	Amazon CloudFront	20
Amazon CloudFront	Johannesburg	South Africa	Amazon CloudFront	50
Amazon CloudFront	Marseille	France	Amazon CloudFront	31
Amazon CloudFront	Santiago de Queretaro	Mexico	Amazon CloudFront	8
Amazon CloudFront	Muscat	Oman	Amazon CloudFront	8
Amazon CloudFront	Dallas	United States	Amazon CloudFront	24
Amazon CloudFront	Ashburn	United States	Amazon CloudFront	9
Amazon CloudFront	Santiago	Chile	Amazon CloudFront	8
Amazon CloudFront	Perth	Australia	Amazon CloudFront	22
Amazon CloudFront	Bogota	Colombia	Amazon CloudFront	4
Amazon CloudFront	Seattle	United States	Amazon CloudFront	11
Amazon CloudFront	Cape Town	South Africa	Amazon CloudFront	27
Amazon CloudFront	Nairobi	Kenya	Amazon CloudFront	27
Amazon CloudFront	Ho Chi Minh City	Vietnam	Amazon CloudFront	8
Amazon CloudFront	Manila	Philippines	Amazon CloudFront	47
Amazon CloudFront	Singapore	Singapore	Amazon CloudFront	17
Amazon CloudFront	Paris	France	Amazon CloudFront	19
Amazon CloudFront	Manchester	United Kingdom	Amazon CloudFront	8
Amazon CloudFront	Dublin	Ireland	Amazon CloudFront	39
Amazon CloudFront	Milan	Italy	Amazon CloudFront	17
Amazon CloudFront	London	United Kingdom	Amazon CloudFront	18
Amazon CloudFront	Kansas City	United States	Amazon CloudFront	16
Amazon CloudFront	Miami	United States	Amazon CloudFront	8
Amazon CloudFront	Philadelphia	United States	Amazon CloudFront	8
Amazon CloudFront	Oslo	Norway	Amazon CloudFront	12
Amazon CloudFront	Los Angeles	United States	Amazon CloudFront	61
Amazon CloudFront	San Francisco	United States	Amazon CloudFront	86
Amazon CloudFront	Taipei	Taiwan	Amazon CloudFront	18
Amazon CloudFront	Tel Aviv	Israel	Amazon CloudFront	4
Amazon CloudFront	Istanbul	Turkey	Amazon CloudFront	4
Amazon CloudFront	Atlanta	United States	Amazon CloudFront	8
Amazon CloudFront	Chicago	United States	Amazon CloudFront	10
Amazon CloudFront	Houston	United States	Amazon CloudFront	9
Amazon CloudFront	Seoul	South Korea	Amazon CloudFront	8
Amazon CloudFront	Tokyo	Japan	Amazon CloudFront	8
Amazon CloudFront	Copenhagen	Denmark	Amazon CloudFront	4
Amazon CloudFront	Sao Paulo	Brazil	Amazon CloudFront	8
Amazon CloudFront	Vancouver	Canada	Amazon CloudFront	8
Amazon CloudFront	Sydney	Australia	Amazon CloudFront	77
Amazon CloudFront	Cairo	Egypt	Amazon CloudFront	8
Amazon CloudFront	Hong Kong	Hong Kong	Amazon CloudFront	23
Amazon CloudFront	Boston	United States	Amazon CloudFront	4
Amazon CloudFront	Manama	Bahrain	Amazon CloudFront	8
Amazon CloudFront	Madrid	Spain	Amazon CloudFront	15
Amazon CloudFront	Melbourne	Australia	Amazon CloudFront	24
Amazon CloudFront	Athens	Greece	Amazon CloudFront	8
Amazon CloudFront	Montreal	Canada	Amazon CloudFront	8
Amazon CloudFront	Brussels	Belgium	Amazon CloudFront	8
Amazon CloudFront	Denver	United States	Amazon CloudFront	5
Amazon CloudFront	Hanoi	Vietnam	Amazon CloudFront	8
Amazon CloudFront	Mumbai	India	Amazon CloudFront	9
Amazon CloudFront	Nashville	United States	Amazon CloudFront	1
Amazon CloudFront	Amsterdam	Netherlands	Amazon CloudFront	11
Amazon CloudFront	New Delhi	India	Amazon CloudFront	16
Amazon CloudFront	Toronto	Canada	Amazon CloudFront	21
Amazon CloudFront	Rome	Italy	Amazon CloudFront	1
Amazon CloudFront	Brisbane	Australia	Amazon CloudFront	42
Amazon CloudFront	Kuala Lumpur	Malaysia	Amazon CloudFront	10
Amazon CloudFront	Rio de Janeiro	Brazil	Amazon CloudFront	4
Amazon CloudFront	Chennai	India	Amazon CloudFront	8
Amazon CloudFront	Lima	Peru	Amazon CloudFront	8
Amazon CloudFront	Pittsburgh	United States	Amazon CloudFront	3
Amazon CloudFront	Sofia	Bulgaria	Amazon CloudFront	8
Amazon CloudFront	Helsinki	Finland	Amazon CloudFront	8
Amazon CloudFront	Bangkok	Thailand	Amazon CloudFront	9
Amazon CloudFront	Barcelona	Spain	Amazon CloudFront	8
Amazon CloudFront	Budapest	Hungary	Amazon CloudFront	8
Amazon CloudFront	Munich	Germany	Amazon CloudFront	4
Amazon CloudFront	Warsaw	Poland	Amazon CloudFront	8
Amazon CloudFront	Kolkata	India	Amazon CloudFront	4
Amazon CloudFront	Prague	Czechia	Amazon CloudFront	8
Amazon CloudFront	Zagreb	Croatia	Amazon CloudFront	8
Amazon CloudFront	Vienna	Austria	Amazon CloudFront	8
Amazon CloudFront	Bengaluru	India	Amazon CloudFront	7
Amazon CloudFront	New York	United States	Amazon CloudFront	8
Amazon CloudFront	Fortaleza	Brazil	Amazon CloudFront	8
Amazon CloudFront	Lagos	Nigeria	Amazon CloudFront	8
Amazon CloudFront	Dusseldorf	Germany	Amazon CloudFront	4
Amazon CloudFront	Stockholm	Sweden	Amazon CloudFront	8
Amazon CloudFront	Zurich	Switzerland	Amazon CloudFront	8

Other Locations

CDN	Location	PoP	Network	# of IPs
Amazon CloudFront	Core Network	United States	Amazon CloudFront	21