coref.slack.com - dns.ninja

coref.slack.com

DNSSEC⚠️ Not signed
A3.95.117.96🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix
PTRec2-3-95-117-96.compute-1.amazonaws.com
A3.210.88.6🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix
A34.193.255.5🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.196.46.202🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.202.253.6🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.203.97.10🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.204.109.226🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.205.195.66🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix
A34.225.62.185🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix
A34.231.24.224🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix
A52.73.140.59🇺🇸 Amazon52.72.0.0/15 EC2 IAD prefix
A54.92.199.186🇺🇸 Amazon54.92.128.0/17 EC2 IAD prefix
A54.147.59.169🇺🇸 Amazon54.144.0.0/14 EC2 IAD NAT prefix
A54.163.235.119🇺🇸 Amazon54.160.0.0/14 EC2 IAD prefix
A54.225.153.205🇺🇸 Amazon54.224.0.0/15 EC2 IAD 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🔒 Signed (DS record present)
A35.81.85.251🇺🇸 Amazon35.80.0.0/12 EC2 PDX prefix
A35.82.91.193🇺🇸 Amazon35.80.0.0/12 EC2 PDX prefix
A44.234.235.93🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix
A44.237.180.172🇺🇸 Amazon44.224.0.0/11 EC2 PDX prefix
A52.89.90.67🇺🇸 Amazon52.88.0.0/15 EC2 PDX Prefix
A54.70.179.16🇺🇸 Amazon54.70.0.0/15 EC2 PDX Prefix
A54.71.95.193🇺🇸 Amazon54.70.0.0/15 EC2 PDX Prefix
A54.188.33.22🇺🇸 Amazon54.188.0.0/15 EC2 PDX prefix
A54.245.50.245🇺🇸 Amazon54.245.0.0/17 EC2 PDX 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 #420 globally
rank #261 in the tld

slack.com

Slack.com is the main website for Slack, a cloud‑based team messaging and collaboration platform operated by Slack Technologies, now part of Salesforce.

Key facts

  • Owner / operator: Slack Technologies (a subsidiary of Salesforce)
  • TLD:.com— gTLD
  • Primary purpose: team collaboration and messaging platform
  • Status: active

History

YearEvent
2013Public beta of Slack launched
2020Salesforce announced acquisition of Slack
2021Acquisition completed; Slack became part of Salesforce
Semrush Rank:#1,593 Keywords:239,092 Traffic:1,677,936/mo
WOT: SAFE (93/100)
📈 Tranco rank: #350
slack.com - Tranco Rank (30d: ↓-17)325330340350357Jun 7Jun 17Jun 27Jul 7Jul 17Jul 18Rank#333#350

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

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DNS History

42 records (16 active, 26 former)

20192020202120222023202420252026MXinbound-smtp.us-east-1.amazonaws.comA3.210.88.63.95.117.9634.193.255.534.196.46.20234.202.253.634.203.97.1034.204.109.22634.205.195.6634.225.62.18534.231.24.22452.73.140.5954.147.59.16954.163.235.11954.225.153.20554.92.199.18613.32.167.13813.33.208.24513.35.142.15913.35.21.15818.159.197.22518.216.36.19018.221.229.8118.230.171.1413.129.123.2353.130.95.1823.134.44.1343.142.111.403.143.19.653.143.53.13.22.139.1763.68.124.1683.68.124.953.68.170.1533.68.175.9852.29.238.21252.84.170.12452.84.230.13754.230.146.15254.230.29.23854.239.152.4454.94.183.148
●MXinbound-smtp.us-east-1.amazonaws.com2018-11-30 → 2026-07-20 · 2 obs
● 2018-11-30 13:17:24
● 2026-07-20 22:21:28
○A13.32.167.1382018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A13.33.208.2452018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A13.35.142.1592018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A13.35.21.1582018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A18.159.197.2252026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
○A18.216.36.1902026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A18.221.229.812026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A18.230.171.1412026-06-11 → 2026-07-16 · 5 obs
○ 2026-05-30 07:35:30
● 2026-06-11 01:49:02
○ 2026-06-28 17:41:32
● 2026-07-16 18:52:00
○ 2026-07-20 22:21:28
○A3.129.123.2352026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.130.95.1822026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.134.44.1342026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.142.111.402026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.143.19.652026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.143.53.12026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
●A3.210.88.62026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
○A3.22.139.1762026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-26 11:23:18
● 2026-05-30 07:35:30
○ 2026-06-11 01:49:02
○ 2026-07-20 22:21:28
○A3.68.124.1682026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
○A3.68.124.952026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
○A3.68.170.1532026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
○A3.68.175.982026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
●A3.95.117.962026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.193.255.52026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.196.46.2022026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.202.253.62026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.203.97.102026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.204.109.2262026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.205.195.662026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.225.62.1852026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A34.231.24.2242026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
○A52.29.238.2122026-03-03 → 2026-07-01 · 7 obs
○ 2018-11-30 13:17:24
● 2026-03-03 22:53:32
● 2026-03-26 11:23:18
○ 2026-05-30 07:35:30
● 2026-07-01 06:26:40
○ 2026-07-11 01:15:04
○ 2026-07-20 22:21:28
●A52.73.140.592026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
○A52.84.170.1242018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A52.84.230.1372018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
●A54.147.59.1692026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A54.163.235.1192026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
●A54.225.153.2052026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
○A54.230.146.1522018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A54.230.29.2382018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
○A54.239.152.442018-11-30 → 2018-11-30 · 3 obs
● 2018-11-30 13:17:24
○ 2026-03-03 22:53:32
○ 2026-07-20 22:21:28
●A54.92.199.1862026-06-28 → 2026-07-20 · 7 obs
○ 2026-03-03 22:53:32
○ 2026-06-11 01:49:02
● 2026-06-28 17:41:32
○ 2026-07-01 06:26:40
● 2026-07-11 01:15:04
○ 2026-07-16 18:52:00
● 2026-07-20 22:21:28
○A54.94.183.1482026-06-11 → 2026-07-16 · 5 obs
○ 2026-05-30 07:35:30
● 2026-06-11 01:49:02
○ 2026-06-28 17:41:32
● 2026-07-16 18:52:00
○ 2026-07-20 22:21:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comi.gtld-servers.net, m.gtld-servers.net, e.gtld-servers.net, k.gtld-servers.net...-
slack.comns-166.awsdns-20.com, ns-606.awsdns-11.net, ns-1901.awsdns-45.co.uk, ns-1493.awsdns-58.org2 records

✅ 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: 612ms | Queries: -

📄 Records

TypeCountSample Data
A1534.196.46.202, 34.202.253.6...
MX1inbound-smtp.us-east-1.amazonaws.com (pr
TXT1v=spf1 -all

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-166.awsdns-20.com, ns-166.awsdns-20.com)

Analysis

IP Addresses

coref.slack.com has 15 IP addresses — 3.95.117.96, 3.210.88.6, 34.193.255.5 and 12 more.

st0p-slacking.slack.com, team-nkemes.slack.com, redacademy-network.slack.com and two other host names share IP numbers with coref.slack.com.

Mail Servers

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

coref.slack.com uses an identical mail server configuration to several other domains — among them abbotdigital.com, mymassagent.com, advanceautoparts.palantirfoundry.com and two more.

coref.slack.com has at least partial mail server overlap with other domains such as oceanicservices.atlassian.net, 6mmsports.com, teamten7.atlassian.net and two more.

This set of mail servers commonly appears together with the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com points to five IP addresses: 3.211.210.226, 44.206.9.87, 44.210.166.32 and two more.