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 | ||||||
| PTR | cl4.xnet.is | ||||||
| NS | ns2.xnet.is | ||||||
| A | 217.9.143.94🇮🇸 Vodafone_Iceland217.9.128.0/20 Vodafone Iceland Allocation | ||||||
| PTR | ns2.xnet.is | ||||||
| MX | firstclass-is.mail.protection.outlook.com ⭐ | ||||||
| A | 2a01:111:f403:ca04::2🇮🇪 Microsoft2a01:111:f000::/36 | ||||||
| A | 2a01:111:f403:ca04::9🇮🇪 Microsoft2a01:111:f000::/36 | ||||||
| A | 2a01:111:f403:ca09::1🇳🇱 Microsoft2a01:111:f000::/36 | ||||||
| A | 2a01:111:f403:ca09::d🇳🇱 Microsoft2a01:111:f000::/36 | ||||||
| A | 52.101.68.5🇮🇪 Microsoft52.96.0.0/12 MICROSOFT | ||||||
| A | 52.101.68.27🇮🇪 Microsoft52.96.0.0/12 MICROSOFT | ||||||
| A | 52.101.73.2🇳🇱 Microsoft52.96.0.0/12 MICROSOFT | ||||||
| A | 52.101.73.12🇳🇱 Microsoft52.96.0.0/12 MICROSOFT | ||||||
| TXT | v=spf1 include:spf.xnet.is include:spf.protection.outlook.com -all | ||||||
| SOA | ns1.xnet.isadmin@netheimur.is 2026-04-30 #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.ishostmaster@isnic.is serial=1780524602 | ||||||
Same first word
Similar names
DNS History
12 records (4 active, 8 former)
○NSa.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○NSb.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○NSc.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○NSd.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
●NSns1.xnet.is2026-02-16 → 2026-06-03 · 3 obs
● 2026-02-16 09:18:54
● 2026-06-03 23:03:24
●NSns2.xnet.is2026-02-16 → 2026-06-03 · 3 obs
● 2026-02-16 09:18:54
● 2026-06-03 23:03:24
●MXfirstclass-is.mail.protection.outlook.com2015-06-21 → 2026-06-03 · 2 obs
● 2026-06-03 23:03:24
○MXms41644740.msv1.invalid.firstclass.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○MXmx1.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○MXmx2.x.is2015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
○A178.248.17.72015-06-21 → 2017-10-20 · 4 obs
● 2017-10-20 17:41:04
○ 2026-02-16 09:18:54
○ 2026-06-03 23:03:24
●A217.9.143.302026-02-16 → 2026-06-03 · 3 obs
● 2026-02-16 09:18:54
● 2026-06-03 23:03:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| is | a.nic.is, c.nic.is, d.nic.is, e.nic.is... | - |
| firstclass.is | ns1.xnet.is, ns2.xnet.is | 2 records |
✅ Authoritative Response
Server:217.9.143.94
NS records: ns1.xnet.is, ns2.xnet.is
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstclass.is (unsigned zone)
⏱️ Timing
Total: 2406ms | 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: 2
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, heyrnarvernd.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.
The hostname firstclass-is.mail.protection.outlook.com has 8 IP addresses: 52.101.68.5, 52.101.68.27, 52.101.73.2 and five others.