substack.tech - dns.ninja

🛡️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=228, name=cloudflare-ech.com
SOAalex.ns.cloudflare.comdns@cloudflare.com serial=2413855197

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=1789080540

Same first word

substack.co
substack.ai
substack.xyz
substack.ca
substack.fi
substack.ms
substack.kr
substack.shop
substack.site
substack.doctor
substack.pages.dev
substack.ru
substack.life
substack.coach
substack.ph
substack.at
substack.com.br
substack.ch
substack.quebec
substack.workers.dev
substack.info
substack.bio
substack.cash
substack.nl
substack.uk
substack.godaddy
substack.ir
substack.tech
substack.click
substack.digital
substack.it
substack.com
substack.work
substack.no
substack.today
substack.com.ph
substack.cc
substack.net
substack.asia
substack.new
substack.app
substack.live
substack.es
substack.pl
substack.center
substack.win
substack.us
substack.link
substack.uz
substack.cloud
substack.space
substack.blog

Similar names

stabukcs.ph
usbstack.com
stabucks.com
substakc.com
stabucks.in
stackbus.dev
stabucks.ph
bastucks.com
stacksub.com
usbstack.workers.dev
busstack.com
stackbus.space
stabucks.com.ph
sabstuck.com
susbtack.com
stabucks.ca
csusakbt.hu
bsctsuka.workers.dev
basstuck.de
stackbus.com
subtsack.com

Previous names

subrata.tech
subsbooster.tech
subscribe-tracker.tech
subscribetn.tech
subscribify.tech
subscription.tech
subscriptionkh.tech
subscrtariff.tech
subsea.tech
subset.tech
subshopgroup.tech
subshopweb.tech
subsidium.tech
subsidiumresearch.tech
subsidy-support.tech
subsilky.tech
subskrybujmnie.tech
subslash.tech
subsoftinternetwebs.tech

Next names

substainable.tech
substantia.tech
substantive.tech
substitute.tech
substraos.tech
substrat.tech
substrata.tech
substrateai.tech
substratelaboratories.tech
substrateone.tech
substructure.tech
subsync.tech
subtainmark.tech
subtechgroup.tech
subtechiesoftsoftware.tech
subtechiesoftwarecodeonline.tech
subtechnosoftonline.tech
subtemademo.tech
subterranea.tech
subtext.tech

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 → 2026-09-10 · 2 obs
● 2026-08-29 18:42:50
● 2026-09-10 23:06:22
●NSolivia.ns.cloudflare.com2026-08-29 → 2026-09-10 · 2 obs
● 2026-08-29 18:42:50
● 2026-09-10 23:06:22
●A104.21.13.2102026-08-30 → 2026-09-10 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-09-10 23:06:22
●A172.67.133.292026-08-30 → 2026-09-10 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-09-10 23:06:22
○A188.114.96.02026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-09-10 23:06:22
○A188.114.97.02026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-09-10 23:06:22
●A2606:4700:3035::6815:dd22026-08-30 → 2026-09-10 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-09-10 23:06:22
●A2606:4700:3035::ac43:851d2026-08-30 → 2026-09-10 · 3 obs
○ 2026-08-29 18:42:50
● 2026-08-30 07:42:38
● 2026-09-10 23:06:22
○A2a06:98c1:3120::2026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-09-10 23:06:22
○A2a06:98c1:3121::2026-08-29 → 2026-08-29 · 3 obs
● 2026-08-29 18:42:50
○ 2026-08-30 07:42:38
○ 2026-09-10 23:06:22

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
techns01.trs-dns.net, ns01.trs-dns.com, ns10.trs-dns.info, ns10.trs-dns.org-
substack.techolivia.ns.cloudflare.com, alex.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.221

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for substack.tech (unsigned zone)

⏱️ Timing

Total: 803ms | Queries: -

📄 Records

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

Analysis

IP Addresses

substack.tech directs to four IP numbers, which are 104.21.13.210, 172.67.133.29, 2606:4700:3035::6815:dd2 and 2606:4700:3035::ac43:851d.

Among the host names that share IP numbers with substack.tech are bitforge.hu, baytas.org, prangin-mall.com and two others.

Name Servers

DNS delegation for substack.tech points to two name servers: alex.ns.cloudflare.com and olivia.ns.cloudflare.com.

substack.tech has the same name server delegation as a number of other domains, such as yuupee.com, ngram.tech, disproportionate.tech and two more.

There is at least partial name server overlap between substack.tech and other domains — chrnbtbmh.cc, wordsortgm.pages.dev, droscarlarrosa.es and two more among them.

The name servers peyton.ns.cloudflare.com, pranab.ns.cloudflare.com and ajay.ns.cloudflare.com are often found in combination with these name servers.

Host names resolving to 6 IP numbers:

alex.ns.cloudflare.com has IP addresses 108.162.193.100, 172.64.33.100 and 173.245.59.100, plus 3 other.

olivia.ns.cloudflare.com has IP addresses 108.162.194.221, 162.159.38.221 and 172.64.34.221, plus 3 other.