DNSWHOIS.INFO - sys-21.slack.com

Search for IP or hostnames:

sys-21.slack.com checked at 2025-10-08T17:30:29.231Z 328ms 176/176/176 100% R:11

`sys-21.slack.com`

MX	`inbound-smtp.us-east-1.amazonaws.com`
		A	3.211.210.226^{🇺🇸 Amazon}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
A	3.95.117.96^{🇺🇸 Amazon}
		PTR	`ec2-3-95-117-96.compute-1.amazonaws.com`
A	3.210.88.6^{🇺🇸 Amazon}
		PTR	`ec2-3-210-88-6.compute-1.amazonaws.com`
A	34.193.255.5^{🇺🇸 Amazon}
		PTR	`ec2-34-193-255-5.compute-1.amazonaws.com`
A	34.196.46.202^{🇺🇸 Amazon}
		PTR	`ec2-34-196-46-202.compute-1.amazonaws.com`
A	34.202.253.6^{🇺🇸 Amazon}
		PTR	`ec2-34-202-253-6.compute-1.amazonaws.com`
A	34.203.97.10^{🇺🇸 Amazon}
		PTR	`ec2-34-203-97-10.compute-1.amazonaws.com`
A	34.204.109.226^{🇺🇸 Amazon}
		PTR	`ec2-34-204-109-226.compute-1.amazonaws.com`
A	34.205.195.66^{🇺🇸 Amazon}
		PTR	`ec2-34-205-195-66.compute-1.amazonaws.com`
A	34.225.62.185^{🇺🇸 Amazon}
		PTR	`ec2-34-225-62-185.compute-1.amazonaws.com`
A	34.231.24.224^{🇺🇸 Amazon}
		PTR	`ec2-34-231-24-224.compute-1.amazonaws.com`
A	52.73.140.59^{🇺🇸 Amazon}
		PTR	`ec2-52-73-140-59.compute-1.amazonaws.com`
A	54.92.199.186^{🇺🇸 Amazon}
		PTR	`ec2-54-92-199-186.compute-1.amazonaws.com`
A	54.147.59.169^{🇺🇸 Amazon}
		PTR	`ec2-54-147-59-169.compute-1.amazonaws.com`
A	54.163.235.119^{🇺🇸 Amazon}
		PTR	`ec2-54-163-235-119.compute-1.amazonaws.com`
A	54.225.153.205^{🇺🇸 Amazon}
		PTR	`ec2-54-225-153-205.compute-1.amazonaws.com`

`slack.com`

	NS	`ns-166.awsdns-20.com`
	MX	`aspmx2.googlemail.com`
	MX	`aspmx3.googlemail.com`
	NS	`ns-606.awsdns-11.net`
	NS	`ns-1493.awsdns-58.org`
	MX	`aspmx.l.google.com`
	NS	`ns-1901.awsdns-45.co.uk`
	MX	`alt1.aspmx.l.google.com`
	MX	`alt2.aspmx.l.google.com`
	A	3.95.117.96^{🇺🇸 Amazon}
	A	3.210.88.6^{🇺🇸 Amazon}
	A	34.193.255.5^{🇺🇸 Amazon}
	A	34.196.46.202^{🇺🇸 Amazon}
	A	34.202.253.6^{🇺🇸 Amazon}
	A	34.203.97.10^{🇺🇸 Amazon}
	A	34.204.109.226^{🇺🇸 Amazon}
	A	34.205.195.66^{🇺🇸 Amazon}
	A	34.225.62.185^{🇺🇸 Amazon}
	A	34.231.24.224^{🇺🇸 Amazon}
	A	52.73.140.59^{🇺🇸 Amazon}
	A	54.92.199.186^{🇺🇸 Amazon}
	A	54.147.59.169^{🇺🇸 Amazon}
	A	54.163.235.119^{🇺🇸 Amazon}
	A	54.225.153.205^{🇺🇸 Amazon}

rank #488 globally
rank #309 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.

Starts with same word

sys-21.com

Starts similarily

sys-21.com

AI analysis

sys-21.slack.com points to fifteen IP numbers: 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 such as reason.slack.com, monettechnologies.slack.com, joorinc.slack.com, mrcooper-team.slack.com and gehry.slack.com share IPs with sys-21.slack.com.

The inbound-smtp.us-east-1.amazonaws.com mail server handles sys-21.slack.com.

sys-21.slack.com shares the same mail server setup as other domains, including alphahub.com, kambal.net, chuanraleigh.com, itsm-sysco-ent.slack.com and saddlebock.com.

sys-21.slack.com shares at least partially some mail servers with other domains, for instance esgpro.atlassian.net, e-logisticscontrol.atlassian.net, matrixreq.atlassian.net, rockportgroup.atlassian.net and nukeygara.atlassian.net.

These mail servers are often used with inbound-smtp.us-west-2.amazonaws.com and aspmx.l.google.com.

The host name 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.

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