`stm32challenge.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:3f4c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:aa46^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.63.76^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.170.70^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ns1.ubmdns.com` ⭐
		A	2400:cb00:2049:1::a29f:d0^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.ubmdns.com`
		A	162.159.0.208^{Cloudflare162.159.0.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.ubmdns.com`
		A	2400:cb00:2049:1::a29f:1d0^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.ubmdns.com`
		A	162.159.1.208^{Cloudflare162.159.1.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.ubmdns.com`
TXT	`v=spf1 mx include:spf.ubm-us.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.63.76, 172.67.170.70
		IPv6 hints	2606:4700:3031::6815:3f4c, 2606:4700:3034::ac43:aa46
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=104, name=cloudflare-ech.com
SOA	`ns1.ubmdns.com`dns@cloudflare.com serial=2410451741

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785049472

Same first word

stm32challenge.com

stm32challenge.net

DNS History

16 records (6 active, 10 former)

○NSa4.nstld.com2015-06-23 → 2017-02-05 · 4 obs

● 2015-06-23 08:13:52
● 2017-02-05 19:47:10
○ 2019-03-21 13:06:22
○ 2026-07-26 07:23:24

○NSf4.nstld.com2015-06-23 → 2017-02-05 · 4 obs

● 2015-06-23 08:13:52
● 2017-02-05 19:47:10
○ 2019-03-21 13:06:22
○ 2026-07-26 07:23:24

○NSg4.nstld.com2015-06-23 → 2017-02-05 · 4 obs

● 2015-06-23 08:13:52
● 2017-02-05 19:47:10
○ 2019-03-21 13:06:22
○ 2026-07-26 07:23:24

○NSl4.nstld.com2015-06-23 → 2017-02-05 · 4 obs

● 2015-06-23 08:13:52
● 2017-02-05 19:47:10
○ 2019-03-21 13:06:22
○ 2026-07-26 07:23:24

●NSns1.ubmdns.com2019-03-21 → 2026-07-26 · 3 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
● 2026-07-26 07:23:24

●NSns2.ubmdns.com2019-03-21 → 2026-07-26 · 3 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
● 2026-07-26 07:23:24

○MXmail1.ubm-us.net2019-03-21 → 2019-03-21 · 3 obs

● 2019-03-21 13:06:22
○ 2026-07-13 10:55:14
○ 2026-07-26 07:23:24

●A104.21.63.762026-07-13 → 2026-07-26 · 3 obs

○ 2019-03-21 13:06:22
● 2026-07-13 10:55:14
● 2026-07-26 07:23:24

○A104.27.132.2112019-03-21 → 2019-03-21 · 4 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
○ 2026-07-13 10:55:14
○ 2026-07-26 07:23:24

○A104.27.133.2112019-03-21 → 2019-03-21 · 4 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
○ 2026-07-13 10:55:14
○ 2026-07-26 07:23:24

●A172.67.170.702026-07-13 → 2026-07-26 · 3 obs

○ 2019-03-21 13:06:22
● 2026-07-13 10:55:14
● 2026-07-26 07:23:24

○A2606:4700:30::681b:84d32019-03-21 → 2019-03-21 · 4 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
○ 2026-07-13 10:55:14
○ 2026-07-26 07:23:24

○A2606:4700:30::681b:85d32019-03-21 → 2019-03-21 · 4 obs

○ 2017-02-05 19:47:10
● 2019-03-21 13:06:22
○ 2026-07-13 10:55:14
○ 2026-07-26 07:23:24

●A2606:4700:3031::6815:3f4c2026-07-13 → 2026-07-26 · 3 obs

○ 2019-03-21 13:06:22
● 2026-07-13 10:55:14
● 2026-07-26 07:23:24

●A2606:4700:3034::ac43:aa462026-07-13 → 2026-07-26 · 3 obs

○ 2019-03-21 13:06:22
● 2026-07-13 10:55:14
● 2026-07-26 07:23:24

○A72.3.226.922015-06-23 → 2017-02-05 · 4 obs

● 2015-06-23 08:13:52
● 2017-02-05 19:47:10
○ 2019-03-21 13:06:22
○ 2026-07-26 07:23:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
stm32challenge.com	ns1.ubmdns.com, ns2.ubmdns.com	2 records

✅ Authoritative Response

Server:162.159.1.208

NS records: ns1.ubmdns.com, ns2.ubmdns.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 357ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.63.76, 172.67.170.70`
AAAA	2	`2606:4700:3031::6815:3f4c, 2606:4700:3034::ac43:aa46`
NS	2	`ns1.ubmdns.com, ns2.ubmdns.com`
TXT	1	`v=spf1 mx include:spf.ubm-us.net -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ns1.ubmdns.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.ubmdns.com, ns2.ubmdns.com)

Analysis

IP Addresses

stm32challenge.com points to the four IP addresses 104.21.63.76, 172.67.170.70, 2606:4700:3031::6815:3f4c and 2606:4700:3034::ac43:aa46.

Additional host names — impartlove.us, uzbekdevs.uz, root.baltic-apartments.com and two others — share IP numbers with stm32challenge.com.

Name Servers

Two name servers handle the delegation for stm32challenge.com: ns1.ubmdns.com and ns2.ubmdns.com.

stm32challenge.com shares its name server setup with other domains, including coteriefashionevent.com, theaestheticbuyersguide.com, ccfconference.com and two others.

ns1.ubmdns.com and ns2.ubmdns.com both carry two IP addresses. The A records for ns1.ubmdns.com are 162.159.0.208 and 2400:cb00:2049:1::a29f:d0; the A records for ns2.ubmdns.com are 162.159.1.208 and 2400:cb00:2049:1::a29f:1d0.

stm32challenge.com - robtex.com