isc2.slack.com - robtex.com

isc2.slack.com

DNSSEC⚠️ Not signed
A18.230.171.141🇧🇷 Amazon18.230.0.0/16 EC2 GRU prefix
PTRec2-18-230-171-141.sa-east-1.compute.amazonaws.com
A54.94.183.148🇧🇷 Amazon54.94.128.0/18 EC2 GRU prefix
MXinbound-smtp.us-east-1.amazonaws.com ⭐
A3.211.210.226🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix
PTRec2-3-211-210-226.compute-1.amazonaws.com
A44.206.9.87🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix
PTRec2-44-206-9-87.compute-1.amazonaws.com
A44.210.166.32🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix
PTRec2-44-210-166-32.compute-1.amazonaws.com
A54.164.173.191🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix
PTRec2-54-164-173-191.compute-1.amazonaws.com
A54.197.5.236🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15
PTRec2-54-197-5-236.compute-1.amazonaws.com
TXTv=spf1 -all

slack.com

DNSSEC⚠️ Not signed
A18.230.171.141🇧🇷 Amazon18.230.0.0/16 EC2 GRU prefix
A54.94.183.148🇧🇷 Amazon54.94.128.0/18 EC2 GRU prefix
NSns-1493.awsdns-58.org ⭐
NSns-166.awsdns-20.com
NSns-1901.awsdns-45.co.uk
NSns-606.awsdns-11.net
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXaspmx2.googlemail.com(10)
MXaspmx3.googlemail.com(10)
TXTOSSRH-54733
TXT_0vidyxobp6x350odqhb4fo7fdxhmtq3
TXTgoogle-site-verification=2PK67oVPNyEtS1avSlr3PhH5nSiFuticbQv_bT4pM2k
TXTgoogle-site-verification=KqX3Ngw0XEjz_0GVx_xwFFlCoO-bskhqU_lxv0Q77mk
TXTgoogle-site-verification=QvelFPjIOe3Vavw0q-aAVYaAPKmWCRjmmVVEAjgfjQc
TXTgoogle-site-verification=efuXt5-oMr2CdNmVi6A9IO29KMKifpseD1qokxjWwcE
TXTgoogle-site-verification=kB1KvgpSk9YkHsFmsj1VPI5YmDvfKctPxnplhGjyqtE
TXTgoogle-site-verification=o2grd1TLmZZ8GrqbhVIFtzO2MRLTtSUpBBIBYfhQVCQ
TXTgoogle-site-verification=v-LLB__IhraaI7ZzuE3jvRFIm2vERPLzWoepAEZJtKQ
TXThubspot-developer-verification=OTE4NzYxYTgtMDUwZi00MzgzLTk2YTUtZDAwNjBlODg1MWM0
TXTspycloud-domain-verification=02e4c0be-cf43-44e4-beaf-4f99702ca632
TXTv=spf1 include:_spf.qualtrics.com include:mail.zendesk.com include:_spfextra....
SOAns-1493.awsdns-58.orgawsdns-hostmaster@amazon.com serial=1
WOT: SAFE (93/100)
rank #426 globally
rank #274 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.com - Tranco Rank (30d: ↓-7)306310315320324Feb 22Mar 3Mar 12Mar 21Mar 30Apr 1Rank#315#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

isc2.ca
isc2.cn
isc2.biz
isc2.sucks
isc2.net
isc2.com
isc2.org
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DNS History

48 records (3 active, 45 former)

20192020202120222023202420252026MXinbound-smtp.us-east-1.amazonaws.commxa.mailgun.orgmxb.mailgun.orgA18.230.171.14154.94.183.14813.225.226.15313.33.144.9613.33.208.24513.33.69.14213.35.21.15818.134.215.4118.159.197.22518.168.172.23818.169.120.19118.169.61.1893.210.88.63.68.124.1683.68.124.953.68.170.1533.68.175.983.95.117.9634.193.255.534.196.46.20234.202.253.634.203.97.1034.204.109.22634.205.195.6634.225.62.18534.231.24.22435.81.85.25135.82.91.19344.234.235.9344.237.180.17252.29.238.21252.73.140.5952.84.210.5752.89.90.6754.147.59.16954.163.235.11954.188.33.2254.192.58.24454.225.153.20554.230.147.13954.230.29.19854.245.50.24554.70.179.1654.71.95.19354.92.199.186
●MXinbound-smtp.us-east-1.amazonaws.com2020-01-27 → 2026-04-04 · 3 obs
○ 2018-05-07 07:00:28
● 2020-01-27 23:25:18
● 2026-04-04 04:16:48
○MXmxa.mailgun.org2018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2020-01-27 23:25:18
○ 2026-04-04 04:16:48
○MXmxb.mailgun.org2018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2020-01-27 23:25:18
○ 2026-04-04 04:16:48
○A13.225.226.1532020-01-27 → 2020-01-27 · 4 obs
○ 2018-05-07 07:00:28
● 2020-01-27 23:25:18
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A13.33.144.962018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A13.33.208.2452018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A13.33.69.1422018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2020-01-27 23:25:18
○ 2026-04-04 04:16:48
○A13.35.21.1582018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A18.134.215.412026-03-29 → 2026-03-29 · 4 obs
○ 2026-03-24 03:41:12
● 2026-03-29 08:27:16
○ 2026-04-04 01:11:52
○ 2026-04-04 04:16:48
○A18.159.197.2252026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A18.168.172.2382026-03-29 → 2026-03-29 · 4 obs
○ 2026-03-24 03:41:12
● 2026-03-29 08:27:16
○ 2026-04-04 01:11:52
○ 2026-04-04 04:16:48
○A18.169.120.1912026-03-29 → 2026-03-29 · 4 obs
○ 2026-03-24 03:41:12
● 2026-03-29 08:27:16
○ 2026-04-04 01:11:52
○ 2026-04-04 04:16:48
○A18.169.61.1892026-03-29 → 2026-03-29 · 4 obs
○ 2026-03-24 03:41:12
● 2026-03-29 08:27:16
○ 2026-04-04 01:11:52
○ 2026-04-04 04:16:48
●A18.230.171.1412026-04-04 → 2026-04-04 · 3 obs
○ 2026-04-04 01:11:52
● 2026-04-04 04:16:46
● 2026-04-04 04:16:48
○A3.210.88.62026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A3.68.124.1682026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A3.68.124.952026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A3.68.170.1532026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A3.68.175.982026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A3.95.117.962026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.193.255.52026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.196.46.2022026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.202.253.62026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.203.97.102026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.204.109.2262026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.205.195.662026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.225.62.1852026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A34.231.24.2242026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A35.81.85.2512026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A35.82.91.1932026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A44.234.235.932026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A44.237.180.1722026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A52.29.238.2122026-02-21 → 2026-04-04 · 11 obs
○ 2026-02-17 12:21:20
○ 2026-02-20 11:40:24
● 2026-02-21 08:29:54
○ 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
● 2026-02-25 20:58:58
● 2026-03-24 03:41:12
○ 2026-03-29 08:27:16
● 2026-04-04 01:11:52
○ 2026-04-04 04:16:46
○ 2026-04-04 04:16:48
○A52.73.140.592026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A52.84.210.572018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A52.89.90.672026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A54.147.59.1692026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A54.163.235.1192026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A54.188.33.222026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A54.192.58.2442018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A54.225.153.2052026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
○A54.230.147.1392018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A54.230.29.1982018-05-07 → 2018-05-07 · 3 obs
● 2018-05-07 07:00:28
○ 2026-02-17 12:21:20
○ 2026-04-04 04:16:48
○A54.245.50.2452026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A54.70.179.162026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A54.71.95.1932026-02-17 → 2026-02-25 · 7 obs
○ 2020-01-27 23:25:18
● 2026-02-17 12:21:20
○ 2026-02-18 21:12:44
○ 2026-02-21 16:00:56
● 2026-02-25 06:00:32
○ 2026-02-25 20:58:58
○ 2026-04-04 04:16:48
○A54.92.199.1862026-02-18 → 2026-02-21 · 7 obs
○ 2026-02-17 12:21:20
● 2026-02-18 21:12:44
● 2026-02-20 11:40:24
○ 2026-02-21 08:29:54
● 2026-02-21 16:00:56
○ 2026-02-25 06:00:32
○ 2026-04-04 04:16:48
●A54.94.183.1482026-04-04 → 2026-04-04 · 3 obs
○ 2026-04-04 01:11:52
● 2026-04-04 04:16:46
● 2026-04-04 04:16:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
slack.comns-166.awsdns-20.com, ns-606.awsdns-11.net, ns-1901.awsdns-45.co.uk, ns-1493.awsdns-58.org1 record

✅ Authoritative Response

Server:205.251.197.213

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: 313ms | Queries: -

📄 Records

TypeCountSample Data
A254.94.183.148, 18.230.171.141
MX1inbound-smtp.us-east-1.amazonaws.com (pr
TXT1v=spf1 -all

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

isc2.slack.com points to two IP numbers: 18.230.171.141 and 54.94.183.148.

Other host names, for instance teammissionweb.slack.com, bootstrapshuffle.slack.com, more-it-os.slack.com, swimmers-team.slack.com and ellioidt.slack.com share IP numbers with isc2.slack.com.

Mail Servers

The mail server for isc2.slack.com is inbound-smtp.us-east-1.amazonaws.com.

isc2.slack.com shares the same mail server setup as other domains, including giovannisfamilyrestaurant.com, vt-bt-85.dealer.com, iedcmace.slack.com, switchmedia.slack.com and grupotesa.com.

isc2.slack.com shares some mail servers with other domains, including macphunsales.atlassian.net, lancetonidee.com, healthplansapp.com, floorus.com and appliedsystems.atlassian.net.

These mail servers are often used with the mail servers inbound-smtp.us-west-2.amazonaws.com.

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.