null.slack.com - dns.ninja

`null.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	🔒 Signed (DS record present)
	A	3.95.117.96^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
	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}
	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 #423 globally
rank #264 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

Year	Event
2013	Public beta of Slack launched
2020	Salesforce announced acquisition of Slack
2021	Acquisition completed; Slack became part of Salesforce

Semrush Rank:#1,593 Keywords:239,092 Traffic:1,677,936/mo
WOT: SAFE (93/100)
📈 Tranco rank: #348

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

null.recipes

null.foundation

null.za.net

null.swiss

null.do

null.cd

null.net.cn

null.investments

null.com.pl

null.ar

null.blogspot.kr

null.ws

null.fyi

null.art

null.fi

null.co.in

null.industries

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null.nyc

null.myqnapcloud.com

null.tc

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null.engineer

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null.moe

null.ltd

null.be

null.web.app

null.com.ph

null.firebaseapp.com

null.gl

null.rocks

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null.s3-external-1.amazonaws.com

null.sx

null.pet

null.net.ph

null.ne.jp

null.com.lk

null.tokyo

null.media

null.best

null.game

null.blogspot.hk

null.flights

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null.beauty

null.blogspot.rs

null.com.cn

null.tax

null.how

null.is-cool.dev

null.cc

null.net.in

null.com

null.vin

null.com.co

null.casa

null.com.ua

null.network

null.as

null.readthedocs.io

null.house

null.my.id

null.stream

null.de.com

null.co.nz

null.org.uk

null.software

null.blogspot.my

null.s3.eu-west-3.amazonaws.com

null.community

null.accountants

null.ec

null.band

null.tel

null.hatenadiary.org

null.cl

null.me

null.df.gov.br

null.j.scaleforce.net

null.blogspot.lt

null.domains

null.org.cn

null.mobi

null.blogspot.it

null.lu

null.moscow

null.deals

null.gold

null.locker

null.nu

null.gitlab.io

null.so

null.photography

null.hatenablog.jp

null.ly

null.s3-ap-southeast-2.amazonaws.com

null.bid

null.now

null.de

null.googleapis.com

null.id.au

null.eu.com

null.co.uk

null.blog

null.family

null.withgoogle.com

Similar names

null.express

null.oxa.cloud

null.leadpages.co

null.agency

null.email

null.group

null.in

null.gdn

null.s3-website.eu-west-3.amazonaws.com

null.tw

null.blogspot.com.es

null.date

nlul.com

null.barsyonline.com

null.exposed

null.auth.us-east-1.amazoncognito.com

null.xyz

null.blogspot.hr

null.online

null.cards

null.fun

null.shoes

null.video

null.myshopify.com

null.pub

null.kr

null.wiki

null.club

null.today

null.dreamhosters.com

null.com.mx

null.id.lv

null.boutique

null.gallery

null.blogspot.fr

null.life

null.dog

null.bar

null.am

null.hk

null.enterprises

null.photos

null.cymru

null.tn

null.systems

null.gr

null.church

null.fund

null.sk

null.bg

null.blogspot.in

null.blogspot.ie

null.vercel.app

null.zone

null.international

null.co.com

null.company

null.hu

null.money

null.wtf

null.raffleentry.org.uk

null.jetzt

null.holdings

null.nz

null.edu.ee

null.ren

null.berlin

llnu.fr

null.rip

null.ist

null.co.jp

null.alwaysdata.net

null.gs

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null.gd

null.audio

null.cz

null.mk

null.cat

null.live

null.paas.massivegrid.com

null.pics

null.edu.tw

null.herokuapp.com

null.energy

null.org.lk

null.s3-website.sa-east-1.amazonaws.com

null.uy

null.adobeaemcloud.com

null.definima.net

null.freetls.fastly.net

null.surf

null.top

null.no

llun.dev

null.kz

null.events

null.fi.cloudplatform.fi

null.vu

null.coffee

DNS History

27 records (16 active, 11 former)

●MXinbound-smtp.us-east-1.amazonaws.com2026-05-20 → 2026-06-30 · 2 obs

● 2026-05-20 03:13:52
● 2026-06-30 23:46:34

○A18.216.36.1902026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A18.221.229.812026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A18.230.171.1412026-06-09 → 2026-06-12 · 5 obs

○ 2026-05-21 02:04:40
● 2026-06-09 14:16:40
● 2026-06-12 06:15:50
○ 2026-06-26 09:17:54
○ 2026-06-30 23:46:34

○A3.129.123.2352026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A3.130.95.1822026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A3.134.44.1342026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A3.142.111.402026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A3.143.19.652026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

○A3.143.53.12026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

●A3.210.88.62026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

○A3.22.139.1762026-05-21 → 2026-05-21 · 4 obs

○ 2026-05-20 03:13:52
● 2026-05-21 02:04:40
○ 2026-06-09 14:16:40
○ 2026-06-30 23:46:34

●A3.95.117.962026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.193.255.52026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.196.46.2022026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.202.253.62026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.203.97.102026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.204.109.2262026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.205.195.662026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.225.62.1852026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A34.231.24.2242026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A52.73.140.592026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A54.147.59.1692026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A54.163.235.1192026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A54.225.153.2052026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

●A54.92.199.1862026-05-20 → 2026-06-30 · 5 obs

● 2026-05-20 03:13:52
○ 2026-05-21 02:04:40
○ 2026-06-12 06:15:50
● 2026-06-26 09:17:54
● 2026-06-30 23:46:34

○A54.94.183.1482026-06-09 → 2026-06-12 · 5 obs

○ 2026-05-21 02:04:40
● 2026-06-09 14:16:40
● 2026-06-12 06:15:50
○ 2026-06-26 09:17:54
○ 2026-06-30 23:46:34

🔍 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	2 records

✅ Authoritative Response

Server:205.251.192.166

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: 267ms | Queries: -

📄 Records

Type	Count	Sample Data
A	15	`34.203.97.10, 34.193.255.5...`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
TXT	1	`v=spf1 -all`

📌 Glue Records Collected

Total: 2

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

Analysis

IP Addresses

null.slack.com directs to 15 IP numbers: 3.95.117.96, 3.210.88.6, 34.193.255.5 and 12 other.

Two other host names, along with nsercwtfast.slack.com, yyjtech.slack.com and goreact.slack.com, also share IP numbers with null.slack.com.

Mail Servers

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

Among the domains sharing a mail server setup with null.slack.com are twcorptech.slack.com, nelsonengineeringhq.slack.com, ezy.vet and two others.

There is at least a partial MX overlap between null.slack.com and other domains, including systembuild.atlassian.net, picolabs.atlassian.net, vaku.in and two others.

These mail servers often co-occur with the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com resolves to five IP numbers: 3.211.210.226, 44.206.9.87, 44.210.166.32 and two others.