upst.dev - dns.ninja

`upst.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:4403::ac40:9aec^{🇺🇸 Cloudflare2606:4700:4403::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2a06:98c1:3107::6812:2114^{🇺🇸 Cloudflare2a06:98c1:3107::/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 hints	104.18.33.20, 172.64.154.236
		IPv6 hints	2606:4700:4403::ac40:9aec, 2a06:98c1:3107::6812:2114
SOA	`rob.ns.cloudflare.com`dns@cloudflare.com serial=2407024754

`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)

Subdomains

vercel.upst.dev

claude-code-cost-analysis.upst.dev

Same first word

upst.dk

upst.biz

upst.ru

upst.net

upst.co

upst.com

upst.at

upst.dev

upst.org

upst.pl

upst.de

Similar names

tups.net

stup.me

stup.at

tpsu.cn

tsup.de

uspt.org

stup.co

stup.de

pstu.com

stup.ro

tpus.com.tw

tups.ru

tsup.jp

uspt.net

ustp.at

ustp.com

pust.no

stpu.com

pust.info

ptus.sk

stpu.ru

tsup.fi

supt.com

pust.it

psut.ru

tups.de

stup.kasserver.com

sput.in

tpsu.com

uspt.info

sutp.cn

sput.de

stpu.fr

stup.hr

ptus.org

tspu.de

sput.com

psut.cn

uspt.com.au

tups.fr

tusp.net

tups.org

supt.cn

stup.co.uk

sput.nyc

tsup.in

tsup.ch

pust.com

ustp.org.ug

uspt.biz

upts.gv.at

sput.co.id

tups.lv

tspu.com

tups.info

ustp.co.id

tups.eu

stup.rs

upts.biz

puts.com

pstu.edu

stup.ru

tsup.cn

stup.fr

tsup.sk

stup.co.in

utsp.ru

tsup.ru

tusp.org

tsup.info

utps.com

stup.com

tpus.com

psut.com

ptsu.de

uspt.edu.ar

ustp.co

pust.us

pust.me

ustp.ru

sput.nl

ptsu.ru

puts.nu

pstu.com.ar

utps.live

psut.edu.jo

upts.org

supt.net

puts.ch

pust.de

pstu.ru

upts.net

tusp.ru

tpus.org

pust.ir

tspu.org

stup.in

ptus.ru

puts.ca

sput.ru

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

DNS History

11 records (9 active, 2 former)

●NSrob.ns.cloudflare.com2026-02-27 → 2026-06-28 · 2 obs

● 2026-02-27 00:58:10
● 2026-06-28 14:39:28

●NSsara.ns.cloudflare.com2026-02-27 → 2026-06-28 · 2 obs

● 2026-02-27 00:58:10
● 2026-06-28 14:39:28

●MXamir.mx.cloudflare.net2026-02-27 → 2026-06-28 · 5 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

●MXisaac.mx.cloudflare.net2026-02-27 → 2026-06-28 · 5 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

●MXlinda.mx.cloudflare.net2026-02-27 → 2026-06-28 · 5 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

●A104.18.33.202026-02-27 → 2026-06-28 · 5 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

●A172.64.154.2362026-02-27 → 2026-06-28 · 5 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

●A2606:4700:4403::ac40:9aec2026-06-28 → 2026-06-28 · 3 obs

○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

○A2606:4700:440c::ac40:9aec2026-02-27 → 2026-06-14 · 4 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
○ 2026-06-28 14:39:28

●A2a06:98c1:3107::6812:21142026-06-28 → 2026-06-28 · 3 obs

○ 2026-06-27 01:42:18
● 2026-06-28 14:39:26
● 2026-06-28 14:39:28

○A2a06:98c1:3109::6812:21142026-02-27 → 2026-06-14 · 4 obs

● 2026-02-27 00:58:10
● 2026-06-14 21:37:48
○ 2026-06-27 01:42:18
○ 2026-06-28 14:39:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
upst.dev	rob.ns.cloudflare.com, sara.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.144

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for upst.dev (unsigned zone)

⏱️ Timing

Total: 961ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.64.154.236, 104.18.33.20`
AAAA	2	`2606:4700:4403::ac40:9aec, 2a06:98c1:3107::6812:2114`
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`

Analysis

Hierarchy

vercel.upst.dev and claude-code-cost-analysis.upst.dev are both subdomains of upst.dev.

IP Addresses

upst.dev directs to four IP numbers, which are 104.18.33.20, 172.64.154.236, 2606:4700:4403::ac40:9aec and 2a06:98c1:3107::6812:2114.

www.maestrosdelweb.com, siovpn.euroclear-services.com, maestrosdelweb.com and two other host names share IP numbers with upst.dev.

Name Servers

DNS delegation for upst.dev points to two name servers: rob.ns.cloudflare.com and sara.ns.cloudflare.com.

upst.dev uses the same name servers as several other domains — among them sfindigo.com, master-zakona-prityazheniya.com, cloudstackhost.com and two more.

There is at least partial name server overlap between upst.dev and other domains — ndlumbres.org, camanda.org, albgameshop.com and two more among them.

These name servers are routinely deployed together with the name servers lady.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

rob.ns.cloudflare.com has IP addresses 108.162.193.140, 172.64.33.140 and 173.245.59.140, plus 3 other.

sara.ns.cloudflare.com has IP addresses 108.162.192.144, 172.64.32.144 and 173.245.58.144, plus 3 other.

Mail Servers

Incoming mail for upst.dev is delivered via three mail servers: amir.mx.cloudflare.net, isaac.mx.cloudflare.net and linda.mx.cloudflare.net.

upst.dev has at least partial mail server overlap with other domains such as billwangphoto.com, stumpblog.com, kodekoan.com and two more.

Hostnames that resolve to 6 IP addresses:

amir.mx.cloudflare.net has IP addresses 162.159.205.11, 162.159.205.12 and 162.159.205.13, plus 3 other.

isaac.mx.cloudflare.net has IP addresses 162.159.205.17, 162.159.205.18 and 162.159.205.19, plus 3 other.

linda.mx.cloudflare.net has IP addresses 162.159.205.23, 162.159.205.24 and 162.159.205.25, plus 3 other.