`u0.si`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::ac43:d5ab^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:109b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.155^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.171^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`serenity.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:266c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c26c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`serenity.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:226c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`serenity.ns.cloudflare.com`
		A	108.162.194.108^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	162.159.38.108^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	172.64.34.108^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
NS	`vick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vick.ns.cloudflare.com`
		A	108.162.193.244^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	172.64.33.244^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	173.245.59.244^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		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	162.159.205.23^{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`
MX	`route1.mx.cloudflare.net`⁽²⁴⁾
		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	162.159.205.11^{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	`route2.mx.cloudflare.net`⁽²⁹⁾
		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`
TXT	`google-site-verification=NmH0UzFZD3n-jwB0EWhCTrXQFAqMKoG8Z1uATiJD2WI`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.155, 172.67.213.171
		IPv6 hints	2606:4700:3035::ac43:d5ab, 2606:4700:3037::6815:109b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`serenity.ns.cloudflare.com`dns@cloudflare.com serial=2403672290

`si`

	DNSSEC	🔒 Signed (DS record present)
	NS	`b.dns.si` ⭐
	NS	`f.dns.si`
	NS	`h.dns.si`
	NS	`i.dns.si`
	NS	`k.dns.si`
	NS	`l.dns.si`
	SOA	`b.dns.si`dns@register.si serial=1778392818

Subdomains

mail.u0.si

Same first word

u0.si

u0.fr

u0.xyz

u0.pics

u0.eu

u0.de

u0.su

u0.be

u0.nl

u0.at

u0.cz

u0.pl

u0.dk

u0.ro

u0.rs

u0.co

u0.ru

u0.hu

u0.ca

u0.com

u0.net

u0.org

u0.se

Similar names

0u.io

0u.ru

0u.net

0u.co.uk

0u.ph

0u.cz

0u.be

0u.ro

0u.de

0u.la

0u.hk

0u.fr

0u.eu

0u.se

0u.com

0u.dk

0u.nl

0u.ae

DNS History

9 records (9 active, 0 former)

●NSserenity.ns.cloudflare.com2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●NSvick.ns.cloudflare.com2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●MXroute1.mx.cloudflare.net2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●MXroute2.mx.cloudflare.net2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●MXroute3.mx.cloudflare.net2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●A104.21.16.1552026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●A172.67.213.1712026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●A2606:4700:3035::ac43:d5ab2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

●A2606:4700:3037::6815:109b2026-05-06 → 2026-05-10 · 2 obs

● 2026-05-06 20:38:38
● 2026-05-10 06:47:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
si	b.dns.si, f.dns.si, h.dns.si, i.dns.si...	12 records
u0.si	serenity.ns.cloudflare.com, vick.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.244

NS records: serenity.ns.cloudflare.com, vick.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for u0.si (unsigned zone)

⏱️ Timing

Total: 785ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.16.155, 172.67.213.171`
AAAA	2	`2606:4700:3035::ac43:d5ab, 2606:4700:3037::6815:109b`
NS	2	`serenity.ns.cloudflare.com, vick.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 20), route1.mx.cloudflare.net (pri: 24)...`
TXT	2	`google-site-verification=NmH0UzFZD3n-jwB, v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`serenity.ns.cloudflare.com dns.cloudflar`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (b.dns.si, f.dns.si, h.dns.si...)

Analysis

Hierarchy

mail.u0.si is a child of u0.si.

IP Addresses

u0.si refers to four IP numbers: 2606:4700:3035::ac43:d5ab, 2606:4700:3037::6815:109b, 104.21.16.155 and 172.67.213.171.

Other host names, for instance gitbin.com, blaq.ru, animecons.co.uk, manhwa18.net and pad3000.com share IP numbers with u0.si.

Name Servers

u0.si's delegation uses two name servers: serenity.ns.cloudflare.com and vick.ns.cloudflare.com.

u0.si uses the same name server setup as other domains, such as solderrecovery.com, mirc.info, subsentio.com, ymailbox.com and dutchnaturalhealing.at.

u0.si at least partially shares name servers with other domains, including bofsteel.ru, amyhll.com, industrynewscenter.com, cubic-storage.com and ftdregistry.com.

These name servers are often used with arnold.ns.cloudflare.com and frank.ns.cloudflare.com.

Host names with six IP numbers:

serenity.ns.cloudflare.com points to 2606:4700:50::a29f:266c, 2803:f800:50::6ca2:c26c, 2a06:98c1:50::ac40:226c, 108.162.194.108, 162.159.38.108 and 172.64.34.108.

vick.ns.cloudflare.com points to 2606:4700:58::adf5:3bf4, 2803:f800:50::6ca2:c1f4, 2a06:98c1:50::ac40:21f4, 108.162.193.244, 172.64.33.244 and 173.245.59.244.

Mail Servers

Three mail servers handle u0.si: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

u0.si shares at least some mail servers with other domains, for example zukumail.com, in9.nl, aiopay.co, n340net.com and squarenet.kr.

Host names with six IP numbers:

route1.mx.cloudflare.net points to: 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13

route2.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

route3.mx.cloudflare.net points to: 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25

u0.si - robtex.com

u0.si

si

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`u0.si`

`si`