`hcss.slack.com`

DNSSEC	⚠️ Not signed
A	3.95.117.96^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
		PTR	`ec2-3-95-117-96.compute-1.amazonaws.com`
A	3.210.88.6^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
A	34.193.255.5^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.196.46.202^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.202.253.6^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.203.97.10^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.204.109.226^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.205.195.66^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
A	34.225.62.185^{🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix}
A	34.231.24.224^{🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix}
A	52.73.140.59^{🇺🇸 Amazon52.72.0.0/15 EC2 IAD prefix}
A	54.92.199.186^{🇺🇸 Amazon54.92.128.0/17 EC2 IAD prefix}
A	54.147.59.169^{🇺🇸 Amazon54.144.0.0/14 EC2 IAD NAT prefix}
A	54.163.235.119^{🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix}
A	54.225.153.205^{🇺🇸 Amazon54.224.0.0/15 EC2 IAD prefix}
MX	`inbound-smtp.us-east-1.amazonaws.com` ⭐
		A	3.211.210.226^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
TXT	`v=spf1 -all`

`slack.com`

	DNSSEC	⚠️ Not signed
	A	18.134.215.41^{🇬🇧 Amazon18.132.0.0/14 EC2 LHR prefix}
	A	18.168.172.238^{🇬🇧 Amazon18.168.0.0/14 EC2 LHR prefix}
	A	18.169.61.189^{🇬🇧 Amazon18.168.0.0/14 EC2 LHR prefix}
	A	18.169.120.191^{🇬🇧 Amazon18.168.0.0/14 EC2 LHR prefix}
	NS	`ns-1493.awsdns-58.org` ⭐
	NS	`ns-166.awsdns-20.com`
	NS	`ns-1901.awsdns-45.co.uk`
	NS	`ns-606.awsdns-11.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`aspmx2.googlemail.com`⁽¹⁰⁾
	MX	`aspmx3.googlemail.com`⁽¹⁰⁾
	TXT	`OSSRH-54733`
	TXT	`_0vidyxobp6x350odqhb4fo7fdxhmtq3`
	TXT	`google-site-verification=2PK67oVPNyEtS1avSlr3PhH5nSiFuticbQv_bT4pM2k`
	TXT	`google-site-verification=KqX3Ngw0XEjz_0GVx_xwFFlCoO-bskhqU_lxv0Q77mk`
	TXT	`google-site-verification=QvelFPjIOe3Vavw0q-aAVYaAPKmWCRjmmVVEAjgfjQc`
	TXT	`google-site-verification=efuXt5-oMr2CdNmVi6A9IO29KMKifpseD1qokxjWwcE`
	TXT	`google-site-verification=kB1KvgpSk9YkHsFmsj1VPI5YmDvfKctPxnplhGjyqtE`
	TXT	`google-site-verification=o2grd1TLmZZ8GrqbhVIFtzO2MRLTtSUpBBIBYfhQVCQ`
	TXT	`google-site-verification=v-LLB__IhraaI7ZzuE3jvRFIm2vERPLzWoepAEZJtKQ`
	TXT	`hubspot-developer-verification=OTE4NzYxYTgtMDUwZi00MzgzLTk2YTUtZDAwNjBlODg1MWM0`
	TXT	`spycloud-domain-verification=02e4c0be-cf43-44e4-beaf-4f99702ca632`
	TXT	`v=spf1 include:_spf.qualtrics.com include:mail.zendesk.com include:_spfextra....`
	SOA	`ns-1493.awsdns-58.org`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (93/100)
rank #429 globally
rank #272 in the tld
This domain, slack.com, is the official website for Slack, a business communication platform. Slack offers a variety of features such as direct messaging, group chats, and topic-specific channels to help teams communicate and collaborate more effectively. In addition to its communication features, it also allows integration with other services like Google Drive, Trello, and Dropbox.WOT: SAFE (93/100)
📈 Tranco rank: #312

Slack is a business communication platform founded in 2013 and acquired by Salesforce in 2021 for $27.7 billion. With over 18 million daily active users, Slack has become essential collaboration infrastructure for businesses, replacing email for many internal communications.

Slack offers real-time messaging, channels for organized discussions, file sharing, integrations with thousands of apps, and Slack Huddles for quick audio conversations. The platform pioneered many features now standard in business chat tools.

Slack's infrastructure handles millions of concurrent connections with strict real-time requirements. The platform processes billions of messages daily, with significant infrastructure for search and file storage.

DNS for slack.com uses Amazon Route 53 with global distribution. The platform's enterprise customers require high availability and security.

Same first word

hcss.de

hcss.net

hcss.me

hcss.nl

hcss.co.uk

hcss.io

hcss.cn

hcss.org.br

hcss.com.cn

hcss.org

hcss.ru

hcss.com

hcss.eu

hcss.biz

hcss.care

Similar names

cshs.edu

hssc.in

ssch.kr

ssch.lib.il.us

ssch.live

hssc.co.kr

shcs.co.in

scsh.net

cssh.qc.ca

shcs.ru

hssc.eu

shcs.se

hssc.it

hssc.ru

ssch.jp

hssc.us

schs.ws

schs.co

hscs.info

cssh.cn

shcs.edu.hk

hssc.org

chss.cz

hscs.de

sshc.bz

schs.info

schs.net

schs.ru

scsh.com

shsc.info

shsc.net

chss.org

sshc.care

ssch.co.uk

hscs.com

shcs.com.cn

cshs.co.uk

shsc.ir

ssch.nl

chss.info

shsc.eu

shsc.kr

hscs.at

ssch.or.kr

cshs.cz

schs.in

cshs.org

scsh.ch

sshc.de

shcs.net

ssch.de

schs.ae

sshc.no

shsc.co.kr

chss.org.uk

shcs.co.uk

ssch.gob.mx

cssh.co.uk

sshc.gallery

scsh.de

cshs.com

hssc.kr

sshc.org

ssch.ch

chss.su

hscs.nyc

hssc.gov.in

shsc.com.au

ssch.gov.mn

shsc.nhs.uk

schs.de

chss.ca

ssch.es

ssch.ca

shsc.com

shsc.co.uk

schs.k12.mn.us

sshc.dk

cshs.cn

shcs.org

scsh.org

hscs.net

schs.edu.my

shsc.com.cn

shcs.ch

chss.pl

ssch.us

schs.org

cshs.ru

chss.in

hssc.fi

shcs.com

shsc.me

hscs.org

DNS History

25 records (16 active, 9 former)

●MXinbound-smtp.us-east-1.amazonaws.com2026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

○MXmxa.mailgun.org2016-12-30 → 2016-12-30 · 3 obs

● 2016-12-30 17:29:52
○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

○MXmxb.mailgun.org2016-12-30 → 2016-12-30 · 3 obs

● 2016-12-30 17:29:52
○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

○A18.159.197.2252026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

●A3.210.88.62026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

○A3.68.124.1682026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

○A3.68.124.952026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

○A3.68.170.1532026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

○A3.68.175.982026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

●A3.95.117.962026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.193.255.52026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.196.46.2022026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.202.253.62026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.203.97.102026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.204.109.2262026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.205.195.662026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.225.62.1852026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A34.231.24.2242026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

○A52.29.238.2122026-03-26 → 2026-03-27 · 2 obs

○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

●A52.73.140.592026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A54.147.59.1692026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A54.163.235.1192026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

●A54.225.153.2052026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

○A54.230.138.1652016-12-30 → 2016-12-30 · 3 obs

● 2016-12-30 17:29:52
○ 2026-03-26 07:36:54
○ 2026-03-27 21:16:06

●A54.92.199.1862026-03-26 → 2026-03-27 · 3 obs

○ 2016-12-30 17:29:52
● 2026-03-26 07:36:54
● 2026-03-27 21:16:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
slack.com	ns-166.awsdns-20.com, ns-606.awsdns-11.net, ns-1901.awsdns-45.co.uk, ns-1493.awsdns-58.org	1 record

✅ Authoritative Response

Server:205.251.194.94

NS records: ns-166.awsdns-20.com, ns-606.awsdns-11.net, ns-1901.awsdns-45.co.uk, ns-1493.awsdns-58.org

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 453ms | Queries: -

📄 Records

Type	Count	Sample Data
A	15	`34.204.109.226, 54.225.153.205...`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
TXT	1	`v=spf1 -all`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-166.awsdns-20.com)

Analysis

IP Addresses

15 IP numbers are pointed to by hcss.slack.com: 3.95.117.96, 3.210.88.6, 34.193.255.5, 34.196.46.202, 34.202.253.6, 34.203.97.10, 34.204.109.226, 34.205.195.66, 34.225.62.185, 34.231.24.224, 52.73.140.59, 54.92.199.186, 54.147.59.169, 54.163.235.119 and 54.225.153.205.

Other host names including tedxfulbrighttokyo.slack.com, sharkbytes-ftc.slack.com, pole-lc-spe.slack.com, evotor.slack.com and outintech.slack.com share IP numbers with hcss.slack.com.

Mail Servers

hcss.slack.com is handled by a single mail server, inbound-smtp.us-east-1.amazonaws.com.

hcss.slack.com shares its mail server setup with other domains, including ramstore.com.br, codecoresfu.slack.com, aws01-g01-gsx97.glip.com, pontusconsultoria.com and gidstechnologies.com.

The mail servers for hcss.slack.com are shared with other domains, for instance accor-it.atlassian.net, hrimplementation.atlassian.net, armtsg.atlassian.net, centricminingsystems.atlassian.net and fusionmarkets.com.

these mail servers are commonly used alongside the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com points to five IP numbers: 3.211.210.226, 44.206.9.87, 44.210.166.32, 54.164.173.191 and 54.197.5.236.

hcss.slack.com - robtex.com

hcss.slack.com

slack.com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Mail Servers

`hcss.slack.com`

`slack.com`