caltech.pl - dns.ninja

`caltech.pl`

DNSSEC	⚠️ Not signed
A	91.211.222.125^{🇵🇱 AS-SMARTHOST-PL91.211.220.0/22 Smarthost - european hosting}
		PTR	`server-ac125.rev.smarthost.pl`
NS	`dns2.smarthost.pl` ⭐
		A	2001:678:63c:0:9:c15d:580a:1^{🇵🇱 AS-SMARTHOST-PL2001:678:63c::/48 Smarthost - european hosting}
			PTR	`server-ba10.rev6.smarthost.pl`
		A	193.93.88.10^{🇵🇱 AS-SMARTHOST-PL193.93.88.0/22 TRUSTNET}
			PTR	`server-ba10.rev.smarthost.pl`
NS	`dns.smarthost.pl`
		A	2001:678:63c:0:9:5bd3:dc0a:1^{🇵🇱 AS-SMARTHOST-PL2001:678:63c::/48 Smarthost - european hosting}
			PTR	`server-aa10.rev6.smarthost.pl`
		A	91.211.220.10^{🇵🇱 AS-SMARTHOST-PL91.211.220.0/22 Smarthost - european hosting}
			PTR	`server-aa10.rev.smarthost.pl`
NS	`dns3.smarthost.pl`
		A	2001:41d0:203:58c3:0:335b:1bc3:1^{🇫🇷 OVH2001:41d0::/32 IPv6}
			PTR	`dns3.smarthost.pl`
		A	51.91.27.195^{🇫🇷 OVH51.91.0.0/16}
			PTR	`dns3.smarthost.pl`
MX	`caltech.pl` ⭐
		A	91.211.222.125^{🇵🇱 AS-SMARTHOST-PL91.211.220.0/22 Smarthost - european hosting}
			PTR	`server-ac125.rev.smarthost.pl`
TXT	`v=spf1 +a +mx +ip4:91.211.220.53 ~all`
SOA	`dns.smarthost.pl`sysadmin@smarthost.pl 2026-06-22 #1

`pl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a-dns.pl` ⭐
	NS	`b-dns.pl`
	NS	`d-dns.pl`
	NS	`f-dns.pl`
	NS	`h-dns.pl`
	NS	`j-dns.pl`
	TXT	`ccTLD of Poland`
	SOA	`a-dns.pl`dnsmaster@nask.pl serial=1786084370

MX for

caltech.pl

Same first word

caltech.ie

caltech.co.th

caltech.bank

caltech.co

caltech.be

caltech.pl

caltech.edu

caltech.fr

caltech.email

caltech.co.uk

caltech.com.my

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caltech.ai

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caltech.co.nz

caltech.com.br

caltech.biz

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caltech.eng.br

caltech.com.tw

caltech.hu

caltech.se

Similar names

clatech.co.th

clachet.com

thelacc.org

lcatech.net

cltahec.com

chaltec.com

lactech.com

lecchat.com

theaccl.com

lecatch.com

acltech.co.in

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cltahec.org

clatech.com

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thelcca.org

acltech.com

clechat.com

chaletc.com

chaltec.de

aceclht.com

telchac.com

thecalc.org

thelacc.com

lactech.ca

techlca.com

catchle.com

DNS History

10 records (5 active, 5 former)

●NSdns.smarthost.pl2026-02-16 → 2026-08-07 · 3 obs

○ 2018-01-27 23:51:46
● 2026-02-16 11:17:28
● 2026-08-07 17:59:24

●NSdns2.smarthost.pl2026-02-16 → 2026-08-07 · 3 obs

○ 2018-01-27 23:51:46
● 2026-02-16 11:17:28
● 2026-08-07 17:59:24

●NSdns3.smarthost.pl2026-02-16 → 2026-08-07 · 3 obs

○ 2018-01-27 23:51:46
● 2026-02-16 11:17:28
● 2026-08-07 17:59:24

○NSns1.nazwa.pl2015-07-01 → 2018-01-27 · 4 obs

● 2015-07-01 05:33:32
● 2018-01-27 23:51:46
○ 2026-02-16 11:17:28
○ 2026-08-07 17:59:24

○NSns2.nazwa.pl2015-07-01 → 2018-01-27 · 4 obs

● 2015-07-01 05:33:32
● 2018-01-27 23:51:46
○ 2026-02-16 11:17:28
○ 2026-08-07 17:59:24

○NSns3.nazwa.pl2015-07-01 → 2018-01-27 · 4 obs

● 2015-07-01 05:33:32
● 2018-01-27 23:51:46
○ 2026-02-16 11:17:28
○ 2026-08-07 17:59:24

●MXcaltech.pl2015-07-01 → 2026-08-07 · 2 obs

● 2015-07-01 05:33:32
● 2026-08-07 17:59:24

○A85.128.134.2362016-05-03 → 2018-01-27 · 5 obs

○ 2016-02-11 21:56:44
● 2016-05-03 14:40:04
● 2018-01-27 23:51:46
○ 2026-02-16 11:17:28
○ 2026-08-07 17:59:24

○A85.128.134.2442015-07-01 → 2016-02-11 · 4 obs

● 2015-07-01 05:33:32
● 2016-02-11 21:56:44
○ 2016-05-03 14:40:04
○ 2026-08-07 17:59:24

●A91.211.222.1252026-02-16 → 2026-08-07 · 3 obs

○ 2018-01-27 23:51:46
● 2026-02-16 11:17:28
● 2026-08-07 17:59:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pl	f-dns.pl, a-dns.pl, j-dns.pl, b-dns.pl...	-
caltech.pl	dns2.smarthost.pl, dns.smarthost.pl, dns3.smarthost.pl	3 records

✅ Authoritative Response

Server:91.211.220.10

NS records: dns2.smarthost.pl, dns.smarthost.pl, dns3.smarthost.pl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2122ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.211.222.125`
NS	3	`dns.smarthost.pl, dns2.smarthost.pl...`
MX	1	`caltech.pl (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:91.211.220.53 ~all`
SOA	1	`dns.smarthost.pl sysadmin.smarthost.pl`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (dns3.smarthost.pl, dns2.smarthost.pl, dns.smarthost.pl)

Analysis

Mail Server Role

caltech.pl serves as a mail server for caltech.pl.

IP Addresses

caltech.pl has exactly one IP address — 91.211.222.125.

luzna.pl, server-ac125.rev.smarthost.pl, silesianquilt.com plus two other host names have IP numbers in common with caltech.pl.

Name Servers

caltech.pl has three name servers — dns2.smarthost.pl, dns3.smarthost.pl and dns.smarthost.pl.

There is at least partial name server overlap between caltech.pl and other domains — agrorubicz.pl, dawidbachryj.pl, babywkuchni.com.pl and two more among them.

The name servers dns2.e-host.net.pl, dns3.e-host.net.pl and dns.e-host.net.pl are often found in combination with these name servers.

Each of dns2.smarthost.pl, dns3.smarthost.pl and dns.smarthost.pl points to two IP numbers. dns2.smarthost.pl points to 193.93.88.10 and 2001:678:63c:0:9:c15d:580a:1. dns3.smarthost.pl points to 51.91.27.195 and 2001:41d0:203:58c3:0:335b:1bc3:1. dns.smarthost.pl points to 91.211.220.10 and 2001:678:63c:0:9:5bd3:dc0a:1.

Mail Servers

caltech.pl uses exactly one mail server, which is caltech.pl.

caltech.pl points to one IP number — 91.211.222.125.