`upst.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:440c::ac40:9aec^{🇺🇸 Cloudflare2606:4700:440c::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:3109::6812:2114^{🇺🇸 Cloudflare2a06:98c1:3109::/48} ✓ In HTTPS hints
A	104.18.33.20^{Cloudflare104.18.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.64.154.236^{🇺🇸 Cloudflare172.64.154.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`rob.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b8c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rob.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rob.ns.cloudflare.com`
		A	108.162.193.140^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	172.64.33.140^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	173.245.59.140^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
NS	`sara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c090^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2090^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sara.ns.cloudflare.com`
		A	108.162.192.144^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	172.64.32.144^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	173.245.58.144^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
MX	`isaac.mx.cloudflare.net` ⭐
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`amir.mx.cloudflare.net`⁽⁴⁸⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`linda.mx.cloudflare.net`⁽⁸⁰⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.18.33.20, 172.64.154.236
		IPv6	2606:4700:440c::ac40:9aec, 2a06:98c1:3109::6812:2114
SOA	`rob.ns.cloudflare.com`dns@cloudflare.com serial=2397627221

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

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upst.ru

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upst.org

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upts.gv.at

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tups.eu

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pstu.edu

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utps.com

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ustp.co

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sput.nl

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stup.in

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utps.company

tpus.net

ustp.io

tspu.ru

tusp.co.uk

sutp.com

supt.nl

upts.com.ua

upts.com

stup.eu

pust.dk

tpsu.ru

stup.se

tusp.co.jp

uspt.ru

sput.be

uspt.com

puts.org

tspu.edu.ru

supt.de

sutp.org

ustp.edu.ph

utps.org

puts.co.uk

ptus.com

ptus.net

ustp.org

upts.ru

pust.sk

sput.net

pust.at

DNS History

9 records (9 active, 0 former)

●NSrob.ns.cloudflare.com2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●NSsara.ns.cloudflare.com2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●MXamir.mx.cloudflare.net2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●MXisaac.mx.cloudflare.net2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●MXlinda.mx.cloudflare.net2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●A104.18.33.202026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●A172.64.154.2362026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●A2606:4700:440c::ac40:9aec2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

●A2a06:98c1:3109::6812:21142026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 00:58:10
● 2026-02-27 07:49:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld4.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
upst.dev	sara.ns.cloudflare.com, rob.ns.cloudflare.com	-

✅ Authoritative Response

Server: 173.245.59.140

NS records: sara.ns.cloudflare.com, rob.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for upst.dev (unsigned zone)

⏱️ Timing

Total: 230ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.154.236, 104.18.33.20`
AAAA	2	`2a06:98c1:3109::6812:2114, 2606:4700:440c::ac40:9aec`
NS	2	`rob.ns.cloudflare.com, sara.ns.cloudflare.com`
MX	3	`isaac.mx.cloudflare.net (pri: 26), amir.mx.cloudflare.net (pri: 48)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`rob.ns.cloudflare.com dns.cloudflare.com`

AI analysis

upst.dev resolves to four IPs: 2606:4700:440c::ac40:9aec, 2a06:98c1:3109::6812:2114, 104.18.33.20 and 172.64.154.236.

Other host names such as www.maestrosdelweb.com, siovpn.euroclear-services.com, maestrosdelweb.com, acuvue.co.il and homebyknauf.hu share IP numbers with upst.dev.

upst.dev is delegated to two name servers: rob.ns.cloudflare.com and sara.ns.cloudflare.com.

upst.dev uses the same name server setup as other domains, including sfindigo.com, master-zakona-prityazheniya.com, cloudstackhost.com, imgtu.com and cloners.org.

At least part of the name servers for upst.dev are shared with other domains, for instance ndlumbres.org, camanda.org, gladiator.org, masterinfointernet.com and arn-enterprises.com.

These name servers are commonly used alongside lady.ns.cloudflare.com and lola.ns.cloudflare.com.

Host names with six IP numbers:

rob.ns.cloudflare.com points to: 2606:4700:58::adf5:3b8c, 2803:f800:50::6ca2:c18c, 2a06:98c1:50::ac40:218c, 108.162.193.140, 172.64.33.140 and 173.245.59.140.

sara.ns.cloudflare.com points to: 2606:4700:50::adf5:3a90, 2803:f800:50::6ca2:c090, 2a06:98c1:50::ac40:2090, 108.162.192.144, 172.64.32.144 and 173.245.58.144.

Three mail servers handle upst.dev: amir.mx.cloudflare.net, isaac.mx.cloudflare.net and linda.mx.cloudflare.net.

upst.dev shares at least some mail servers with other domains, for example billwangphoto.com, stumpblog.com, kodekoan.com, surepass.us and hkcc.cc.

Host names with six IP numbers: amir.mx.cloudflare.net points to 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.11, 162.159.205.12 and 162.159.205.13; isaac.mx.cloudflare.net points to 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19; linda.mx.cloudflare.net points to 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.23, 162.159.205.24 and 162.159.205.25.

upst.dev - robtex.com

upst.dev

dev

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

AI analysis

`upst.dev`

`dev`