`cccst.slack.com`

DNSSEC	⚠️ Not signed
A	18.230.171.141^{🇧🇷 Amazon18.230.0.0/16 EC2 GRU prefix}
		PTR	`ec2-18-230-171-141.sa-east-1.compute.amazonaws.com`
A	54.94.183.148^{🇧🇷 Amazon54.94.128.0/18 EC2 GRU 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	🔒 Signed (DS record present)
	A	3.68.124.95^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	3.68.124.168^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	3.68.170.153^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	3.68.175.98^{🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix}
	A	18.159.197.225^{🇩🇪 Amazon18.156.0.0/14 EC2 FRA prefix}
	A	52.29.238.212^{🇩🇪 Amazon52.29.0.0/16 EC2 FRA 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 #428 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: #322

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

cccst.cn

Similar names

sctcc.edu

tccsc.net

tcscc.org

cctsc.cn

stccc.org

cstcc.org

ccsct.org

tccsc.co.kr

ctccs.com

cctsc.net

stccc.edu.hk

cctsc.com

sccct.cn

ctscc.com

scctc.net

stccc.com

csctc.com

ctcsc.com

cctcs.net

stccc.org.uk

cccts.com

cscct.com

ctcsc.org

ccsct.com

ccsct.net

ccstc.com

tccsc.com

csctc.hk

scctc.org

ctscc.org

ctscc.net

scctc.org.cn

tccsc.com.cn

sctcc.org

stccc.co.uk

stccc.cn

stccc.org.au

tccsc.cn

ccstc.net

stccc.com.cn

tcccs.com

scctc.com.cn

stccc.ca

scctc.com

ctscc.or.th

csctc.org

tcscc.com

sccct.com

cctcs.org

cctsc.org

sctcc.com

tccsc.org

tccsc.com.mx

cccts.org

cctcs.com

DNS History

34 records (3 active, 31 former)

●MXinbound-smtp.us-east-1.amazonaws.com2026-02-16 → 2026-04-03 · 3 obs

○ 2018-05-13 10:10:22
● 2026-02-16 03:04:34
● 2026-04-03 05:50:22

○MXmxa.mailgun.org2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○MXmxb.mailgun.org2018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A13.33.144.962018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A13.33.208.2452018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A13.33.226.1312018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A13.35.21.1582018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A18.159.197.2252026-02-16 → 2026-03-26 · 21 obs

○ 2018-05-13 10:10:22
● 2026-02-16 03:04:34
○ 2026-02-20 11:40:06
● 2026-02-21 08:29:36
○ 2026-02-21 16:00:42
● 2026-02-25 20:58:40
● 2026-03-07 01:10:38
○ 2026-03-09 03:19:40
○ 2026-03-09 17:39:30
● 2026-03-10 03:45:56
○ 2026-03-10 10:49:22
● 2026-03-11 05:07:48
● 2026-03-13 14:04:02
○ 2026-03-14 00:36:00
● 2026-03-14 07:48:38
● 2026-03-17 22:54:10
○ 2026-03-21 13:12:48
○ 2026-03-25 02:21:10
● 2026-03-26 03:34:38
● 2026-03-26 04:27:34
○ 2026-04-03 05:50:22

●A18.230.171.1412026-04-03 → 2026-04-03 · 2 obs

○ 2026-03-26 04:27:34
● 2026-04-03 05:50:22

○A3.210.88.62026-02-20 → 2026-03-25 · 19 obs

○ 2026-02-16 03:04:34
● 2026-02-20 11:40:06
○ 2026-02-21 08:29:36
● 2026-02-21 16:00:42
○ 2026-02-25 20:58:40
○ 2026-03-07 01:10:38
● 2026-03-09 03:19:40
● 2026-03-09 17:39:30
○ 2026-03-10 03:45:56
● 2026-03-10 10:49:22
○ 2026-03-11 05:07:48
○ 2026-03-13 14:04:02
● 2026-03-14 00:36:00
○ 2026-03-14 07:48:38
○ 2026-03-17 22:54:10
● 2026-03-21 13:12:48
● 2026-03-25 02:21:10
○ 2026-03-26 03:34:38
○ 2026-04-03 05:50:22

○A3.68.124.1682026-02-16 → 2026-03-26 · 21 obs

○A3.68.124.952026-02-16 → 2026-03-26 · 21 obs

○A3.68.170.1532026-02-16 → 2026-03-26 · 21 obs

○A3.68.175.982026-02-16 → 2026-03-26 · 21 obs

○A3.95.117.962026-02-20 → 2026-03-25 · 19 obs

○A34.193.255.52026-02-20 → 2026-03-25 · 19 obs

○A34.196.46.2022026-02-20 → 2026-03-25 · 19 obs

○A34.202.253.62026-02-20 → 2026-03-25 · 19 obs

○A34.203.97.102026-02-20 → 2026-03-25 · 19 obs

○A34.204.109.2262026-02-20 → 2026-03-25 · 19 obs

○A34.205.195.662026-02-20 → 2026-03-25 · 19 obs

○A34.225.62.1852026-02-20 → 2026-03-25 · 19 obs

○A34.231.24.2242026-02-20 → 2026-03-25 · 19 obs

○A52.29.238.2122026-02-16 → 2026-03-26 · 21 obs

○A52.73.140.592026-02-20 → 2026-03-25 · 19 obs

○A52.84.210.572018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A54.147.59.1692026-02-20 → 2026-03-25 · 19 obs

○A54.163.235.1192026-02-20 → 2026-03-25 · 19 obs

○A54.192.58.862018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A54.225.153.2052026-02-20 → 2026-03-25 · 19 obs

○A54.230.147.792018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A54.230.29.662018-05-13 → 2018-05-13 · 3 obs

● 2018-05-13 10:10:22
○ 2026-02-16 03:04:34
○ 2026-04-03 05:50:22

○A54.92.199.1862026-02-20 → 2026-03-25 · 19 obs

●A54.94.183.1482026-04-03 → 2026-04-03 · 2 obs

○ 2026-03-26 04:27:34
● 2026-04-03 05:50:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
slack.com	ns-166.awsdns-20.com, ns-606.awsdns-11.net, ns-1901.awsdns-45.co.uk, ns-1493.awsdns-58.org	-

✅ Authoritative Response

Server:205.251.199.109

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

⚠️ Insecure (no DNSSEC)

No DS record for slack.com (unsigned zone)

⏱️ Timing

Total: 113ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`18.230.171.141, 54.94.183.148`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
TXT	1	`v=spf1 -all`

Analysis

IP Addresses

cccst.slack.com resolves to two IP numbers: 18.230.171.141 and 54.94.183.148.

other host names including tamkeentech.slack.com, ics.slack.com, ccstrack.slack.com, kikuralab.slack.com and tvmai.slack.com share IP numbers with cccst.slack.com.

Mail Servers

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

cccst.slack.com shares the same mail server setup as other domains, for instance singlstore.com, studiosix.slack.com, audee-membership.jp, cargoutilitytrailerforsale.com and nethru.awsapps.com.

cccst.slack.com shares some mail servers with other domains, at least partially, for instance poolinspector.com.au, mattresscity.co.th, ovarro.atlassian.net, neurocirurgia.org.br and e-velopment.atlassian.net.

These mail servers are often used together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, inbound-smtp.us-west-2.amazonaws.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.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.

cccst.slack.com - robtex.com

cccst.slack.com

slack.com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Mail Servers

`cccst.slack.com`

`slack.com`