substack.tech - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

substack.tech

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:dd2🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:851d🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.13.210Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.29🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSalex.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b64🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalex.ns.cloudflare.com
A2803:f800:50::6ca2:c164🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRalex.ns.cloudflare.com
A2a06:98c1:50::ac40:2164🇺🇸 Cloudflare2a06:98c1:50::/45
PTRalex.ns.cloudflare.com
A108.162.193.100🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalex.ns.cloudflare.com
A172.64.33.100🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalex.ns.cloudflare.com
A173.245.59.100🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRalex.ns.cloudflare.com
NSolivia.ns.cloudflare.com
A2606:4700:50::a29f:26dd🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolivia.ns.cloudflare.com
A2803:f800:50::6ca2:c2dd🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRolivia.ns.cloudflare.com
A2a06:98c1:50::ac40:22dd🇺🇸 Cloudflare2a06:98c1:50::/45
PTRolivia.ns.cloudflare.com
A108.162.194.221🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolivia.ns.cloudflare.com
A162.159.38.221Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolivia.ns.cloudflare.com
A172.64.34.221🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolivia.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.13.210, 172.67.133.29
IPv6 hints2606:4700:3035::6815:dd2, 2606:4700:3035::ac43:851d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=24, name=cloudflare-ech.com
SOAalex.ns.cloudflare.comdns@cloudflare.com serial=2411188008

tech

DNSSEC🔒 Signed (DS record present)
NSns01.trs-dns.com ⭐
NSns.trs-dns.com
NSns01.trs-dns.net
NSns10.trs-dns.info
NSns10.trs-dns.org
SOAns.trs-dns.comtrs-ops@tucows.com serial=1788075541

Same first word

substack.co
substack.ai
substack.ca
substack.shop
substack.ru
substack.life
substack.at
substack.info
substack.bio
substack.godaddy
substack.ir
substack.tech
substack.click
substack.it
substack.com
substack.no
substack.today
substack.cc
substack.net
substack.asia
substack.app
substack.win
substack.link
substack.blog

Similar names

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stabucks.com
substakc.com
stabucks.in
bastucks.com
busstack.com
stackbus.space
csusakbt.hu
basstuck.de
stackbus.com
subtsack.com

Previous names

suboutletnet.tech
suboutletweb.tech
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subpresident2016shop.tech
subpresident2016web.tech
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subqualityeasyonline.tech
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subscription.tech
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subset.tech
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subsoftinternetwebs.tech

Next names

substrata.tech
substrateone.tech
subsync.tech
subtainmark.tech
subtechgroup.tech
subtechiesoftsoftware.tech
subtechiesoftwarecodeonline.tech
subtechnosoftonline.tech
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subtitles.tech
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subtopmine.tech
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subtrack.tech
subtrak.tech
suburbsmart.tech
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DNS History

10 records (6 active, 4 former)

NSalex.ns.cloudflare.comolivia.ns.cloudflare.comA104.21.13.210172.67.133.292606:4700:3035::6815:dd22606:4700:3035::ac43:851d188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSalex.ns.cloudflare.com2026-08-29 → 2026-08-30 · 2 obs
● 2026-08-29 18:42:50
● 2026-08-30 07:42:40
●NSolivia.ns.cloudflare.com2026-08-29 → 2026-08-30 · 2 obs
● 2026-08-29 18:42:50
● 2026-08-30 07:42:40
●A104.21.13.2102026-08-30 → 2026-08-30 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-08-30 07:42:40
●A172.67.133.292026-08-30 → 2026-08-30 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-08-30 07:42:40
○A188.114.96.02026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-08-30 07:42:40
○A188.114.97.02026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-08-30 07:42:40
●A2606:4700:3035::6815:dd22026-08-30 → 2026-08-30 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-08-30 07:42:40
●A2606:4700:3035::ac43:851d2026-08-30 → 2026-08-30 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-08-30 07:42:40
○A2a06:98c1:3120::2026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-08-30 07:42:40
○A2a06:98c1:3121::2026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-08-30 07:42:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
techns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info8 records
substack.techalex.ns.cloudflare.com, olivia.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.100

NS records: alex.ns.cloudflare.com, olivia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for substack.tech (unsigned zone)

⏱️ Timing

Total: 1075ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.133.29, 104.21.13.210
AAAA22606:4700:3035::6815:dd2, 2606:4700:3035::ac43:851d
NS2alex.ns.cloudflare.com, olivia.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1alex.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org...)

Analysis

IP Addresses

substack.tech has four IP addresses: 104.21.13.210, 172.67.133.29, 2606:4700:3035::6815:dd2 and 2606:4700:3035::ac43:851d.

Additional host names — prangin-mall.com, hebzaojiao.com, list.center and two others — share IP numbers with substack.tech.

Name Servers

substack.tech uses two name servers for its delegation: alex.ns.cloudflare.com and olivia.ns.cloudflare.com.

substack.tech shares its name server setup with other domains, including yuupee.com, ngram.tech, disproportionate.tech and two others.

substack.tech partially shares its NS delegation with several other domains, including droscarlarrosa.es, imigrasikaur.com, mylaser.site and two others.

These name servers are regularly seen alongside peyton.ns.cloudflare.com and ajay.ns.cloudflare.com as name servers.

Host names with 6 IP numbers:

Hostname alex.ns.cloudflare.com directs to 108.162.193.100, 172.64.33.100 and 173.245.59.100 along with 3 other IP addresses.

Hostname olivia.ns.cloudflare.com directs to 108.162.194.221, 162.159.38.221 and 172.64.34.221 along with 3 other IP addresses.