`boit.cz`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3035::6815:473d^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a9fd^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.71.61^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.169.253^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`isla.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a77^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c077^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`isla.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2077^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`isla.ns.cloudflare.com`
		A	108.162.192.119^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	172.64.32.119^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
		A	173.245.58.119^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isla.ns.cloudflare.com`
NS	`theo.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c190^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`theo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2190^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`theo.ns.cloudflare.com`
		A	108.162.193.144^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	172.64.33.144^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	173.245.59.144^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
MX	`boit-cz.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::10^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbapr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::9^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr04cu00801.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::20^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00400.inbound.protection.outlook.com`
		A	52.101.68.12^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	52.101.68.27^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db7pr03cu00503.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
		A	52.101.73.22^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00106.inbound.protection.outlook.com`
TXT	`MS=ms46826490`
TXT	`google-site-verification=571-xRYXiX7LSUh3EOxtaOFecrEL-lc5vo-OjoGwuAI`
TXT	`v=spf1 a include:spf.protection.outlook.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.71.61, 172.67.169.253
		IPv6 hints	2606:4700:3035::6815:473d, 2606:4700:3035::ac43:a9fd
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=95, name=cloudflare-ech.com
SOA	`isla.ns.cloudflare.com`dns@cloudflare.com serial=2409151281

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1785518239

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DNS History

12 records (7 active, 5 former)

●NSisla.ns.cloudflare.com2026-05-30 → 2026-07-31 · 2 obs

● 2026-05-30 11:39:36
● 2026-07-31 17:53:40

●NStheo.ns.cloudflare.com2026-05-30 → 2026-07-31 · 2 obs

● 2026-05-30 11:39:36
● 2026-07-31 17:53:40

●MXboit-cz.mail.protection.outlook.com2026-05-30 → 2026-07-31 · 2 obs

● 2026-05-30 11:39:36
● 2026-07-31 17:53:40

●A104.21.71.612026-05-30 → 2026-07-31 · 7 obs

● 2026-05-30 11:39:36
○ 2026-05-31 08:14:24
● 2026-06-04 21:08:24
● 2026-06-13 02:39:30
○ 2026-06-17 18:26:28
● 2026-06-28 10:59:04
● 2026-07-31 17:53:40

●A172.67.169.2532026-05-30 → 2026-07-31 · 7 obs

● 2026-05-30 11:39:36
○ 2026-05-31 08:14:24
● 2026-06-04 21:08:24
● 2026-06-13 02:39:30
○ 2026-06-17 18:26:28
● 2026-06-28 10:59:04
● 2026-07-31 17:53:40

○A188.114.96.02026-05-31 → 2026-06-17 · 7 obs

○ 2026-05-30 11:39:36
● 2026-05-31 08:14:24
○ 2026-06-04 21:08:24
○ 2026-06-13 02:39:30
● 2026-06-17 18:26:28
○ 2026-06-28 10:59:04
○ 2026-07-31 17:53:40

○A188.114.97.02026-05-31 → 2026-06-17 · 7 obs

○ 2026-05-30 11:39:36
● 2026-05-31 08:14:24
○ 2026-06-04 21:08:24
○ 2026-06-13 02:39:30
● 2026-06-17 18:26:28
○ 2026-06-28 10:59:04
○ 2026-07-31 17:53:40

●A2606:4700:3035::6815:473d2026-06-28 → 2026-07-31 · 3 obs

○ 2026-06-17 18:26:28
● 2026-06-28 10:59:04
● 2026-07-31 17:53:40

●A2606:4700:3035::ac43:a9fd2026-05-30 → 2026-07-31 · 7 obs

● 2026-05-30 11:39:36
○ 2026-05-31 08:14:24
● 2026-06-04 21:08:24
● 2026-06-13 02:39:30
○ 2026-06-17 18:26:28
● 2026-06-28 10:59:04
● 2026-07-31 17:53:40

○A2606:4700:3037::6815:473d2026-05-30 → 2026-06-13 · 6 obs

● 2026-05-30 11:39:36
○ 2026-05-31 08:14:24
● 2026-06-04 21:08:24
● 2026-06-13 02:39:30
○ 2026-06-17 18:26:28
○ 2026-07-31 17:53:40

○A2a06:98c1:3120::2026-05-31 → 2026-06-17 · 7 obs

○ 2026-05-30 11:39:36
● 2026-05-31 08:14:24
○ 2026-06-04 21:08:24
○ 2026-06-13 02:39:30
● 2026-06-17 18:26:28
○ 2026-06-28 10:59:04
○ 2026-07-31 17:53:40

○A2a06:98c1:3121::2026-05-31 → 2026-06-17 · 7 obs

○ 2026-05-30 11:39:36
● 2026-05-31 08:14:24
○ 2026-06-04 21:08:24
○ 2026-06-13 02:39:30
● 2026-06-17 18:26:28
○ 2026-06-28 10:59:04
○ 2026-07-31 17:53:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
boit.cz	isla.ns.cloudflare.com, theo.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.119

NS records: isla.ns.cloudflare.com, theo.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1030ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.169.253, 104.21.71.61`
AAAA	2	`2606:4700:3035::6815:473d, 2606:4700:3035::ac43:a9fd`
NS	2	`isla.ns.cloudflare.com, theo.ns.cloudflare.com`
MX	1	`boit-cz.mail.protection.outlook.com (pri`
TXT	3	`MS=ms46826490, google-site-verification=571-xRYXiX7LSUh...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`isla.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

boit.cz resolves to four IP addresses: 104.21.71.61, 172.67.169.253, 2606:4700:3035::6815:473d and 2606:4700:3035::ac43:a9fd.

Two other host names, along with horizonedge101.sbs, apheller.com and zzacys.com, also share IP numbers with boit.cz.

Name Servers

DNS delegation for boit.cz points to two name servers: isla.ns.cloudflare.com and theo.ns.cloudflare.com.

boit.cz shares its NS records with other domains, for example wujie666.com, mianfeishadu.com, babaorun.com and two others.

boit.cz has at least partial name server overlap with other domains, such as telegham.com, eliminatum.com, skatla.net and two others.

These name servers tend to appear together with the name servers gwen.ns.cloudflare.com, meiling.ns.cloudflare.com and galilea.ns.cloudflare.com.

DNS names with 6 IP addresses:

isla.ns.cloudflare.com has IP addresses 108.162.192.119, 172.64.32.119 and 173.245.58.119, plus 3 other.

theo.ns.cloudflare.com has IP addresses 108.162.193.144, 172.64.33.144 and 173.245.59.144, plus 3 other.

Mail Servers

The sole mail server for boit.cz is boit-cz.mail.protection.outlook.com.

With 8 IP addresses total, boit-cz.mail.protection.outlook.com resolves to 52.101.68.12, 52.101.68.27, 52.101.73.8 and 5 others.

boit.cz - robtex.com

boit.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`boit.cz`

`cz`