firstclass.is - dns.ninja

`firstclass.is`

DNSSEC	⚠️ Not signed
A	217.9.143.30^{🇮🇸 Vodafone_Iceland217.9.128.0/20 Vodafone Iceland Allocation}
NS	`ns1.xnet.is` ⭐
		A	185.248.120.75^{🇮🇸 IS-Netheimur185.248.120.0/22}
NS	`ns2.xnet.is`
		A	217.9.143.94^{🇮🇸 Vodafone_Iceland217.9.128.0/20 Vodafone Iceland Allocation}
MX	`firstclass-is.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::6^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::8^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db5pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::5^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am1pr04cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::d^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr05cu01305.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.21^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.73.30^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
TXT	`v=spf1 include:spf.xnet.is include:spf.protection.outlook.com -all`
SOA	`ns1.xnet.is`admin@netheimur.is 2026-06-27 #1

`is`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.is` ⭐
	NS	`c.nic.is`
	NS	`d.nic.is`
	NS	`e.nic.is`
	NS	`f.nic.is`
	SOA	`a.nic.is`hostmaster@isnic.is serial=1784643002

Same first word

firstclass.sk

firstclass.marketing

firstclass.international

firstclass.sh.cn

firstclass.com.hk

firstclass.cl

firstclass.ch

firstclass.hu

firstclass.cn

firstclass.fitness

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firstclass.fi

firstclass.com.sa

firstclass.solutions

firstclass.sa

firstclass.ru

firstclass.com.br

firstclass.taxi

firstclass.me

firstclass.cc

firstclass.edu.hk

firstclass.fr

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firstclass.ne.jp

firstclass.capital

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firstclass.se

firstclass.rentals

firstclass.com.pl

firstclass.tel

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firstclass.dk

firstclass.is

firstclass.in.th

firstclass.co.kr

firstclass.expert

firstclass.org

firstclass.at

firstclass.com.tr

firstclass.fo

firstclass.info

firstclass.it

firstclass.flights

firstclass.ws

firstclass.eu

firstclass.limo

firstclass.nl

firstclass.domains

firstclass.com.au

firstclass.mx

firstclass.sc

firstclass.no

firstclass.com

firstclass.com.cn

firstclass.as

firstclass.estate

firstclass.de

firstclass.agency

firstclass.net

firstclass.cz

Similar names

firtsclass.com

classfirst.in

classfirst.net

calstrsifs.com

classfirst.com

fristclass.com

DNS History

12 records (4 active, 8 former)

○NSa.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○NSb.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○NSc.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○NSd.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

●NSns1.xnet.is2026-02-16 → 2026-07-21 · 3 obs

○ 2017-10-20 17:41:04
● 2026-02-16 09:18:54
● 2026-07-21 14:18:14

●NSns2.xnet.is2026-02-16 → 2026-07-21 · 3 obs

○ 2017-10-20 17:41:04
● 2026-02-16 09:18:54
● 2026-07-21 14:18:14

●MXfirstclass-is.mail.protection.outlook.com2015-06-21 → 2026-07-21 · 2 obs

● 2015-06-21 07:55:44
● 2026-07-21 14:18:14

○MXms41644740.msv1.invalid.firstclass.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○MXmx1.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○MXmx2.x.is2015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

○A178.248.17.72015-06-21 → 2017-10-20 · 4 obs

● 2015-06-21 07:55:44
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-07-21 14:18:14

●A217.9.143.302026-02-16 → 2026-07-21 · 3 obs

○ 2017-10-20 17:41:04
● 2026-02-16 09:18:54
● 2026-07-21 14:18:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
is	a.nic.is, f.nic.is, d.nic.is, c.nic.is...	10 records
firstclass.is	ns1.xnet.is, ns2.xnet.is	2 records

✅ Authoritative Response

Server:185.248.120.75

NS records: ns1.xnet.is, ns2.xnet.is

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclass.is (unsigned zone)

⏱️ Timing

Total: 993ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.9.143.30`
NS	2	`ns1.xnet.is, ns2.xnet.is`
MX	1	`firstclass-is.mail.protection.outlook.co`
TXT	1	`v=spf1 include:spf.xnet.is include:spf.p`
SOA	1	`ns1.xnet.is admin.netheimur.is`

📌 Glue Records Collected

Total: 12

In-bailiwick: 10 (f.nic.is, e.nic.is, d.nic.is...)

Out-of-bailiwick: 2 (ns1.xnet.is, ns2.xnet.is)

Analysis

IP Addresses

firstclass.is has exactly one IP address — 217.9.143.30.

infuse.is, aircharter.is, gongugreining.is plus two other host names have IP numbers in common with firstclass.is.

Name Servers

firstclass.is is served by two delegated name servers, ns1.xnet.is and ns2.xnet.is.

The name server configuration of firstclass.is is shared with other domains, for instance gudrunardottir.com, hagur.is, bleikt.dv.is and two others.

firstclass.is has at least partial name server overlap with other domains, such as aci.is, ferill.is, fodurlandid.is and two others.

It is common to see these name servers used together with name servers ns1.wpvefhysing.is and ns2.wpvefhysing.is.

ns1.xnet.is directs to 185.248.120.75 and ns2.xnet.is directs to 217.9.143.94; each host name points to exactly one IP number.

Mail Servers

firstclass.is uses one mail server — firstclass-is.mail.protection.outlook.com.

firstclass-is.mail.protection.outlook.com has 8 IP addresses: 52.101.68.8, 52.101.68.21, 52.101.73.4 plus 5 more.