underobstruction.com - dns.ninja

`underobstruction.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:b70c^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:305b^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.48.91^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.183.12^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`casey.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c9e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`casey.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`casey.ns.cloudflare.com`
		A	108.162.195.158^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	162.159.44.158^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	172.64.35.158^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
NS	`tessa.ns.cloudflare.com`
		A	2606:4700:50::a29f:26e5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2e5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tessa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22e5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tessa.ns.cloudflare.com`
		A	108.162.194.229^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	162.159.38.229^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
		A	172.64.34.229^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tessa.ns.cloudflare.com`
MX	`mail.tutanota.de` ⭐
		A	185.205.69.211^{🇺🇸 TUTA185.205.69.0/24}
			PTR	`mail.w11.tutanota.de`
		A	185.205.69.213^{🇺🇸 TUTA185.205.69.0/24}
			PTR	`mail.w13.tutanota.de`
		A	185.205.69.214^{🇺🇸 TUTA185.205.69.0/24}
			PTR	`mail.w14.tutanota.de`
TXT	`t-verify=03017b691d828377ec0c4285c75a20d9`
TXT	`v=spf1 include:spf.tutanota.de -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.48.91, 172.67.183.12
		IPv6 hints	2606:4700:3030::ac43:b70c, 2606:4700:3033::6815:305b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=223, name=cloudflare-ech.com
SOA	`casey.ns.cloudflare.com`dns@cloudflare.com serial=2410677135

`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=1785628442

Same first word

underobstruction.com

DNS History

9 records (7 active, 2 former)

●NScasey.ns.cloudflare.com2026-03-13 → 2026-08-02 · 2 obs

● 2026-03-13 04:48:22
● 2026-08-02 00:10:38

●NStessa.ns.cloudflare.com2026-03-13 → 2026-08-02 · 2 obs

● 2026-03-13 04:48:22
● 2026-08-02 00:10:38

●MXmail.tutanota.de2026-08-02 → 2026-08-02 · 2 obs

● 2026-08-02 00:10:36
● 2026-08-02 00:10:38

●A104.21.48.912026-03-13 → 2026-08-02 · 2 obs

● 2026-03-13 04:48:22
● 2026-08-02 00:10:38

●A172.67.183.122026-03-13 → 2026-08-02 · 2 obs

● 2026-03-13 04:48:22
● 2026-08-02 00:10:38

●A2606:4700:3030::ac43:b70c2026-07-18 → 2026-08-02 · 3 obs

○ 2026-03-13 04:48:22
● 2026-07-18 00:56:10
● 2026-08-02 00:10:38

●A2606:4700:3033::6815:305b2026-07-18 → 2026-08-02 · 3 obs

○ 2026-03-13 04:48:22
● 2026-07-18 00:56:10
● 2026-08-02 00:10:38

○A2606:4700:3034::ac43:b70c2026-03-13 → 2026-03-13 · 3 obs

● 2026-03-13 04:48:22
○ 2026-07-18 00:56:10
○ 2026-08-02 00:10:38

○A2606:4700:3036::6815:305b2026-03-13 → 2026-03-13 · 3 obs

● 2026-03-13 04:48:22
○ 2026-07-18 00:56:10
○ 2026-08-02 00:10:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
underobstruction.com	tessa.ns.cloudflare.com, casey.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.158

NS records: tessa.ns.cloudflare.com, casey.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for underobstruction.com (unsigned zone)

⏱️ Timing

Total: 590ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.183.12, 104.21.48.91`
AAAA	2	`2606:4700:3033::6815:305b, 2606:4700:3030::ac43:b70c`
NS	2	`casey.ns.cloudflare.com, tessa.ns.cloudflare.com`
MX	1	`mail.tutanota.de (pri: 0)`
TXT	2	`t-verify=03017b691d828377ec0c4285c75a20d, v=spf1 include:spf.tutanota.de -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`casey.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (tessa.ns.cloudflare.com, tessa.ns.cloudflare.com, tessa.ns.cloudflare.com...)

Analysis

IP Addresses

underobstruction.com resolves to four IP addresses: 104.21.48.91, 172.67.183.12, 2606:4700:3030::ac43:b70c and 2606:4700:3033::6815:305b.

Additional host names — madv.vacastudios.com, vacastudios.com, jnzipper.com and two others — share IP numbers with underobstruction.com.

Name Servers

underobstruction.com has two authoritative name servers — casey.ns.cloudflare.com and tessa.ns.cloudflare.com.

underobstruction.com shares its name server setup with other domains, including timberservices.us, newfirst.com, planetswish.com and two others.

underobstruction.com shares at least some of its name servers with other domains, including bujv.cn, jwvfngevxx55.top, xdxx2.icu and two others.

These name servers are frequently paired with the name servers kim.ns.cloudflare.com and fattouche.ns.cloudflare.com.

Host names with 6 IP numbers:

casey.ns.cloudflare.com points to 108.162.195.158, 162.159.44.158, 172.64.35.158 and 3 other IP addresses.

tessa.ns.cloudflare.com points to 108.162.194.229, 162.159.38.229, 172.64.34.229 and 3 other IP addresses.

Mail Servers

underobstruction.com has one mail server: mail.tutanota.de.

underobstruction.com shares the same mail server setup as other domains, including letgoandrelax.net, n10x.net, imp.nu and two others.

underobstruction.com shares at least some of its mail servers with other domains, such as bergman.pro and and.fi.

mail.tutanota.de resolves to three IP numbers — 185.205.69.211, 185.205.69.213 and 185.205.69.214.