understack.co - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

understack.co

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:3b3a🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:d722🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.59.58Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.215.34🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
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
NSricardo.ns.cloudflare.com
A2606:4700:58::a29f:2cd3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRricardo.ns.cloudflare.com
A2803:f800:50::6ca2:c3d3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRricardo.ns.cloudflare.com
A2a06:98c1:50::ac40:23d3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRricardo.ns.cloudflare.com
A108.162.195.211🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A162.159.44.211Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.35.211🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.59.58, 172.67.215.34
IPv6 hints2606:4700:3035::6815:3b3a, 2606:4700:3035::ac43:d722
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=37, name=cloudflare-ech.com
SOAolivia.ns.cloudflare.comdns@cloudflare.com serial=2419292010

co

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.registrydns.co
NSb.registrydns.co
NSc.registrydns.co
NSd.registrydns.co
SOAns0.centralnic.nethostmaster@centralnic.net serial=1759800168

Same first word

understack.co
understack.site
understack.it
understack.dk
understack.workers.dev
understack.es
understack.dev
understack.ai
understack.com
understack.io

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Previous names

underscoreaudio.co
underscored.co
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undersea.co
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undershepherd.co
undershower.co
underside.co
undersight.co
undersigned.co
undersky.co
undersol.co
underspend.co
understable.co

Next names

understairs.co
understairstorage.co
understan.co
understand.co
understandably.co
understandai.co
understandanybibleverse.co
understandaustralia.co
understandbetter.co
understandhealth.co
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understanding.co
understandingai.co
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understandingautism.co
understandingcgvhd.co
understandingcll.co
understandingdcsoltuions.co
understandingfinance.co

DNS History

6 records (6 active, 0 former)

NSolivia.ns.cloudflare.comricardo.ns.cloudflare.comA104.21.59.58172.67.215.342606:4700:3035::6815:3b3a2606:4700:3035::ac43:d722
●NSolivia.ns.cloudflare.com2026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28
●NSricardo.ns.cloudflare.com2026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28
●A104.21.59.582026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28
●A172.67.215.342026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28
●A2606:4700:3035::6815:3b3a2026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28
●A2606:4700:3035::ac43:d7222026-10-06 → 2026-11-10 · 2 obs
● 2026-10-06 10:02:22
● 2026-11-10 02:20:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coa.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co8 records
understack.coolivia.ns.cloudflare.com, ricardo.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.211

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for understack.co (unsigned zone)

⏱️ Timing

Total: 1380ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.215.34, 104.21.59.58
AAAA22606:4700:3035::ac43:d722, 2606:4700:3035::6815:3b3a
NS2olivia.ns.cloudflare.com, ricardo.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1olivia.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.registrydns.co, b.registrydns.co, c.registrydns.co...)

Analysis

IP Addresses

understack.co points to the four IP addresses 104.21.59.58, 172.67.215.34, 2606:4700:3035::6815:3b3a and 2606:4700:3035::ac43:d722.

Two other host names, along with dornveximq.shop, 1998bet77.com and perfumemallonline.com, also share IP numbers with understack.co.

Name Servers

Two name servers handle the delegation for understack.co: olivia.ns.cloudflare.com and ricardo.ns.cloudflare.com.

understack.co shares its NS records with other domains, for example jbk56ine-q0deo1hia37us4px2v3c.workers.dev, lanaschiferl.workers.dev, stopinfractori-ro-50000-cg5.pages.dev and two others.

There is at least partial name server overlap between understack.co and other domains — qez03.pages.dev, doughops.io, cz2.site and two more among them.

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

DNS names with 6 IP addresses:

olivia.ns.cloudflare.com resolves to 108.162.194.221, 162.159.38.221 and 172.64.34.221 among others, with 3 other IP addresses in total.

ricardo.ns.cloudflare.com resolves to 108.162.195.211, 162.159.44.211 and 172.64.35.211 among others, with 3 other IP addresses in total.