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	216.198.53.2	4

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	54.94.89.59	224
AWS Global Accelerator	3.33.241.96	4
NetActuate	45.54.67.1	4
WordPress	192.0.66.150	1

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	143.204.55.6	2970
Fastly	199.232.188.106	345

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

Anycast

CDN	Sample IP	# of IPs
Amazon CloudFront	13.224.125.13	31
Fastly	140.248.128.102	137

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	6
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	San Jose	United States	Fastly	6
Fastly	New York	United States	Fastly	10
Fastly	Hong Kong	Hong Kong	Fastly	2
Fastly	Melbourne	Australia	Fastly	2
Fastly	Osaka	Japan	Fastly	2
Fastly	Sao Paulo	Brazil	Fastly	4
Fastly	Paris	France	Fastly	4
Fastly	Toronto	Canada	Fastly	2
Fastly	Madrid	Spain	Fastly	4
Fastly	Montreal	Canada	Fastly	14
Fastly	Fujairah	United Arab Emirates	Fastly	2
Fastly	Columbus	United States	Fastly	2
Fastly	Minneapolis	United States	Fastly	2
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	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	Kolkata	India	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	25
Amazon CloudFront	Dubai	United Arab Emirates	Amazon CloudFront	13
Amazon CloudFront	Buenos Aires	Argentina	Amazon CloudFront	40
Amazon CloudFront	Lisbon	Portugal	Amazon CloudFront	30
Amazon CloudFront	Frankfurt	Germany	Amazon CloudFront	48
Amazon CloudFront	Johannesburg	South Africa	Amazon CloudFront	65
Amazon CloudFront	Marseille	France	Amazon CloudFront	82
Amazon CloudFront	Milan	Italy	Amazon CloudFront	29
Amazon CloudFront	Bucharest	Romania	Amazon CloudFront	26
Amazon CloudFront	Santiago de Queretaro	Mexico	Amazon CloudFront	29
Amazon CloudFront	Muscat	Oman	Amazon CloudFront	30
Amazon CloudFront	Vienna	Austria	Amazon CloudFront	30
Amazon CloudFront	Atlanta	United States	Amazon CloudFront	39
Amazon CloudFront	Montreal	Canada	Amazon CloudFront	38
Amazon CloudFront	Dallas	United States	Amazon CloudFront	27
Amazon CloudFront	Manchester	United Kingdom	Amazon CloudFront	32
Amazon CloudFront	Ho Chi Minh City	Vietnam	Amazon CloudFront	24
Amazon CloudFront	Ashburn	United States	Amazon CloudFront	41
Amazon CloudFront	Chicago	United States	Amazon CloudFront	42
Amazon CloudFront	Santiago	Chile	Amazon CloudFront	36
Amazon CloudFront	Perth	Australia	Amazon CloudFront	37
Amazon CloudFront	Bogota	Colombia	Amazon CloudFront	4
Amazon CloudFront	Sao Paulo	Brazil	Amazon CloudFront	39
Amazon CloudFront	Los Angeles	United States	Amazon CloudFront	51
Amazon CloudFront	Seattle	United States	Amazon CloudFront	21
Amazon CloudFront	Cape Town	South Africa	Amazon CloudFront	51
Amazon CloudFront	Tokyo	Japan	Amazon CloudFront	48
Amazon CloudFront	Nairobi	Kenya	Amazon CloudFront	40
Amazon CloudFront	Helsinki	Finland	Amazon CloudFront	32
Amazon CloudFront	Stockholm	Sweden	Amazon CloudFront	32
Amazon CloudFront	Calgary	Canada	Amazon CloudFront	6
Amazon CloudFront	Manila	Philippines	Amazon CloudFront	31
Amazon CloudFront	Singapore	Singapore	Amazon CloudFront	55
Amazon CloudFront	Paris	France	Amazon CloudFront	39
Amazon CloudFront	Dublin	Ireland	Amazon CloudFront	15
Amazon CloudFront	London	United Kingdom	Amazon CloudFront	48
Amazon CloudFront	Kansas City	United States	Amazon CloudFront	30
Amazon CloudFront	Miami		Amazon CloudFront	39
Amazon CloudFront	Philadelphia	United States	Amazon CloudFront	4
Amazon CloudFront	Zagreb	Croatia	Amazon CloudFront	20
Amazon CloudFront	Seoul	South Korea	Amazon CloudFront	32
Amazon CloudFront	Taipei	Taiwan	Amazon CloudFront	42
Amazon CloudFront	Tel Aviv	Israel	Amazon CloudFront	20
Amazon CloudFront	Istanbul	Turkey	Amazon CloudFront	6
Amazon CloudFront	Portland	United States	Amazon CloudFront	10
Amazon CloudFront	San Francisco	United States	Amazon CloudFront	85
Amazon CloudFront	New York	United States	Amazon CloudFront	37
Amazon CloudFront	Rio de Janeiro		Amazon CloudFront	32
Amazon CloudFront	Madrid	Spain	Amazon CloudFront	45
Amazon CloudFront	Warsaw	Poland	Amazon CloudFront	31
Amazon CloudFront	Fortaleza		Amazon CloudFront	31
Amazon CloudFront	Lima		Amazon CloudFront	31
Amazon CloudFront	Vancouver	Canada	Amazon CloudFront	27
Amazon CloudFront	Sydney	Australia	Amazon CloudFront	77
Amazon CloudFront	Jeddah	Saudi Arabia	Amazon CloudFront	1
Amazon CloudFront	Cairo	Egypt	Amazon CloudFront	31
Amazon CloudFront	Budapest	Hungary	Amazon CloudFront	28
Amazon CloudFront	Houston	United States	Amazon CloudFront	14
Amazon CloudFront	Hyderabad	India	Amazon CloudFront	33
Amazon CloudFront	Boston	United States	Amazon CloudFront	8
Amazon CloudFront	Hong Kong	Hong Kong	Amazon CloudFront	46
Amazon CloudFront	Tampa	United States	Amazon CloudFront	1
Amazon CloudFront	Rome	Italy	Amazon CloudFront	23
Amazon CloudFront	Hamburg	Germany	Amazon CloudFront	30
Amazon CloudFront	Osaka	Japan	Amazon CloudFront	29
Amazon CloudFront	Melbourne	Australia	Amazon CloudFront	48
Amazon CloudFront	Athens	Greece	Amazon CloudFront	32
Amazon CloudFront	Mumbai	India	Amazon CloudFront	53
Amazon CloudFront	Brussels	Belgium	Amazon CloudFront	30
Amazon CloudFront	Auckland	New Zealand	Amazon CloudFront	2
Amazon CloudFront	Bangkok	Thailand	Amazon CloudFront	39
Amazon CloudFront	Dusseldorf	Germany	Amazon CloudFront	8
Amazon CloudFront	Denver	United States	Amazon CloudFront	46
Amazon CloudFront	Hanoi	Vietnam	Amazon CloudFront	24
Amazon CloudFront	Prague	Czechia	Amazon CloudFront	19
Amazon CloudFront	Toronto	Canada	Amazon CloudFront	29
Amazon CloudFront	Kuala Lumpur	Malaysia	Amazon CloudFront	36
Amazon CloudFront	Lagos	Nigeria	Amazon CloudFront	35
Amazon CloudFront	Amsterdam	Netherlands	Amazon CloudFront	48
Amazon CloudFront	New Delhi	India	Amazon CloudFront	31
Amazon CloudFront	Chennai	India	Amazon CloudFront	46
Amazon CloudFront	Jakarta	Indonesia	Amazon CloudFront	1
Amazon CloudFront	Kolkata	India	Amazon CloudFront	4
Amazon CloudFront	Phoenix	United States	Amazon CloudFront	12
Amazon CloudFront	Brisbane	Australia	Amazon CloudFront	58
Amazon CloudFront	Pune	India	Amazon CloudFront	25
Amazon CloudFront	Sofia	Bulgaria	Amazon CloudFront	28
Amazon CloudFront	Barcelona	Spain	Amazon CloudFront	16
Amazon CloudFront	Doha	Qatar	Amazon CloudFront	26
Amazon CloudFront	Salt Lake City	United States	Amazon CloudFront	22
Amazon CloudFront	Oslo	Norway	Amazon CloudFront	4
Amazon CloudFront	Bengaluru	India	Amazon CloudFront	10
Amazon CloudFront	Berlin	Germany	Amazon CloudFront	5
Amazon CloudFront	Zurich	Switzerland	Amazon CloudFront	30

Other Locations

CDN	Location	PoP	Network	# of IPs
Amazon CloudFront	Core Network	Japan	Amazon CloudFront	4
Amazon CloudFront	Core Network	United States	Amazon CloudFront	24
Amazon CloudFront	Core Network	United Arab Emirates	Amazon CloudFront	15
Amazon CloudFront	Core Network	New Zealand	Amazon CloudFront	3
Amazon CloudFront	Core Network	Italy	Amazon CloudFront	8