`biocentrum.edu.pl`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:7ce^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:bc03^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.7.206^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.188.3^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`celeste.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2607^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`celeste.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c207^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`celeste.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2207^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`celeste.ns.cloudflare.com`
		A	108.162.194.7^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`celeste.ns.cloudflare.com`
		A	162.159.38.7^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`celeste.ns.cloudflare.com`
		A	172.64.34.7^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`celeste.ns.cloudflare.com`
NS	`javier.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ccc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`javier.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3cc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`javier.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23cc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`javier.ns.cloudflare.com`
		A	108.162.195.204^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`javier.ns.cloudflare.com`
		A	162.159.44.204^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`javier.ns.cloudflare.com`
		A	172.64.35.204^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`javier.ns.cloudflare.com`
MX	`route2.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	`route3.mx.cloudflare.net`⁽⁷²⁾
		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`⁽⁹⁹⁾
		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`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.7.206, 172.67.188.3
		IPv6 hints	2606:4700:3034::6815:7ce, 2606:4700:3037::ac43:bc03
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=9, name=cloudflare-ech.com
SOA	`celeste.ns.cloudflare.com`dns@cloudflare.com serial=2402458689

`edu.pl`

	DNSSEC	⚠️ Not signed
	NS	`a-dns.pl` ⭐ ⚠️ Not in parent delegation
	NS	`b-dns.pl` ⚠️ Not in parent delegation
	NS	`d-dns.pl` ⚠️ Not in parent delegation
	NS	`f-dns.pl` ⚠️ Not in parent delegation
	NS	`h-dns.pl` ⚠️ Not in parent delegation
	NS	`j-dns.pl` ⚠️ Not in parent delegation
	SOA	`a-dns.pl`dnsmaster@nask.pl serial=1776925851

rank #264943 globally
rank #1754 in the tld
WOT: SAFE (79/100)

Subdomains

www.biocentrum.edu.pl

Same first word

biocentrum.se

biocentrum.edu.pl

Similar names

bmicounter.com

imnotbruce.blogspot.sk

DNS History

16 records (9 active, 7 former)

●NSceleste.ns.cloudflare.com2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●NSjavier.ns.cloudflare.com2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

○NSns1.ddregistrar.pl2026-02-17 → 2026-04-24 · 2 obs

○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

○NSns1.fsi.pl2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:08:54
○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

○NSns2.ddregistrar.pl2026-02-17 → 2026-04-24 · 2 obs

○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

○NSns2.fsi.pl2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:08:54
○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

○MXa192.fsi.pl2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:08:54
○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

●MXroute1.mx.cloudflare.net2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●MXroute2.mx.cloudflare.net2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●MXroute3.mx.cloudflare.net2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●A104.21.7.2062026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●A172.67.188.32026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

○A194.33.187.1922018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:08:54
○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

●A2606:4700:3034::6815:7ce2026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

●A2606:4700:3037::ac43:bc032026-02-17 → 2026-04-24 · 3 obs

○ 2018-08-26 20:08:54
● 2026-02-17 20:23:32
● 2026-04-24 02:13:24

○A77.79.227.2422026-02-17 → 2026-04-24 · 2 obs

○ 2026-02-17 20:23:32
○ 2026-04-24 02:13:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	f-dns.pl, d-dns.pl, a-dns.pl, b-dns.pl...	-
biocentrum.edu.pl	javier.ns.cloudflare.com, celeste.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.204

NS records: javier.ns.cloudflare.com, celeste.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for biocentrum.edu.pl (unsigned zone)

⏱️ Timing

Total: 399ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.188.3, 104.21.7.206`
AAAA	2	`2606:4700:3037::ac43:bc03, 2606:4700:3034::6815:7ce`
NS	2	`celeste.ns.cloudflare.com, javier.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 44), route3.mx.cloudflare.net (pri: 72)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`celeste.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

biocentrum.edu.pl is the parent of www.biocentrum.edu.pl.

IP Addresses

Four IP numbers are pointed to by biocentrum.edu.pl: 2606:4700:3034::6815:7ce, 2606:4700:3037::ac43:bc03, 104.21.7.206 and 172.67.188.3.

other host names including mari.in.ua, 5323333zx.com, 51funplay.com, www.sniperdequestoes.com.br and vtcorpindia.com share IP numbers with biocentrum.edu.pl.

Name Servers

biocentrum.edu.pl is delegated to two name servers celeste.ns.cloudflare.com and javier.ns.cloudflare.com.

biocentrum.edu.pl shares the same name server setup as other domains, for instance mieleniewski.pl, classmeble.pl, mojwolontariat.pl, pistoletydomalowania.pl and psmzakopane.pl.

biocentrum.edu.pl at least partially shares name servers with other domains, for instance gayorgy(0x706f726e).com, mista.com.tr, vinicorp.com.vn, vovcia.net and upkeepfla.com.

these name servers are commonly used alongside ruth.ns.cloudflare.com.

Host names with six IP numbers:

Host name celeste.ns.cloudflare.com points to: 2606:4700:50::a29f:2607, 2803:f800:50::6ca2:c207, 2a06:98c1:50::ac40:2207, 108.162.194.7, 162.159.38.7 and 172.64.34.7.

Host name javier.ns.cloudflare.com points to: 2606:4700:58::a29f:2ccc, 2803:f800:50::6ca2:c3cc, 2a06:98c1:50::ac40:23cc, 108.162.195.204, 162.159.44.204 and 172.64.35.204.

Mail Servers

biocentrum.edu.pl is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

biocentrum.edu.pl shares some mail servers with other domains, at least partially, for instance houz.no, hellow0rld.com, azwallpapers.com, informationmedia.org and autoaz.ro.

Host names with six IP numbers:

Host name 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.

Host name 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.

Host name 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.

biocentrum.edu.pl - robtex.com