kernel.is - robtex.com
kernel.is
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.81.142.141🇺🇸 OVH51.81.128.0/17 Hosting route | ||||||
| PTR | kernel.is | ||||||
| NS | ns.njord.resolver.is ⭐ | ||||||
| A | 198.251.86.87🇺🇸 FRANTECH198.251.86.0/24 More specific route. | ||||||
| PTR | ns.njord.resolver.is | ||||||
| NS | ns.skadi.resolver.is | ||||||
| A | 198.251.90.87FRANTECH198.251.90.0/24 More specific route. | ||||||
| PTR | ns.skadi.resolver.is | ||||||
| MX | mail.hostname.is ⭐ | ||||||
| A | 15.204.6.26🇺🇸 OVH15.204.0.0/17 Hosting route | ||||||
| PTR | ip26.ip-15-204-6.us | ||||||
| TXT | v=spf1 mx mx:kernel.is -all | ||||||
| SOA | ns.njord.resolver.isnoc@resolver.is 2026-01-03 #2 | ||||||
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=1783097402 | ||||||
PTR for
Subdomains
mail.kernel.is |
Same first word
Similar names
DNS History
9 records (4 active, 5 former)
○NSns.mimir.hacked.is2019-12-13 → 2021-06-30 · 4 obs
● 2021-06-30 00:37:30
○ 2026-02-21 11:31:32
○ 2026-07-03 17:02:56
●NSns.njord.resolver.is2026-02-21 → 2026-07-03 · 3 obs
● 2026-02-21 11:31:32
● 2026-07-03 17:02:56
●NSns.skadi.resolver.is2026-02-21 → 2026-07-03 · 3 obs
● 2026-02-21 11:31:32
● 2026-07-03 17:02:56
○NSns.tyr.hacked.is2019-12-13 → 2021-06-30 · 4 obs
● 2021-06-30 00:37:30
○ 2026-02-21 11:31:32
○ 2026-07-03 17:02:56
●MXmail.hostname.is2026-02-21 → 2026-07-03 · 3 obs
● 2026-02-21 11:31:32
● 2026-07-03 17:02:56
○MXmail.kernel.is2019-12-13 → 2021-06-30 · 4 obs
● 2021-06-30 00:37:30
○ 2026-02-21 11:31:32
○ 2026-07-03 17:02:56
○A51.15.42.02019-12-13 → 2019-12-13 · 3 obs
○ 2021-06-30 00:37:30
○ 2026-07-03 17:02:56
○A51.222.235.262021-06-30 → 2021-06-30 · 4 obs
● 2021-06-30 00:37:30
○ 2026-02-21 11:31:32
○ 2026-07-03 17:02:56
●A51.81.142.1412026-02-21 → 2026-07-03 · 3 obs
● 2026-02-21 11:31:32
● 2026-07-03 17:02:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| is | a.nic.is, c.nic.is, d.nic.is, e.nic.is... | 10 records |
| kernel.is | ns.njord.resolver.is, ns.skadi.resolver.is | 4 records |
✅ Authoritative Response
Server:198.251.86.87
NS records: ns.njord.resolver.is, ns.skadi.resolver.is
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kernel.is (unsigned zone)
⏱️ Timing
Total: 3509ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.81.142.141 |
| NS | 2 | ns.njord.resolver.is, ns.skadi.resolver.is |
| MX | 1 | mail.hostname.is (pri: 10) |
| TXT | 1 | v=spf1 mx mx:kernel.is -all |
| SOA | 1 | ns.njord.resolver.is noc.resolver.is |
📌 Glue Records Collected
Total: 14
In-bailiwick: 10 (a.nic.is, a.nic.is, c.nic.is...)
Out-of-bailiwick: 4 (ns.njord.resolver.is, ns.njord.resolver.is, ns.skadi.resolver.is...)
Analysis
Hierarchy
kernel.is is a parent domain of mail.kernel.is.
IP Addresses
kernel.is directs to one IP number, which is 51.81.142.141.
Name Servers
kernel.is is served by two delegated name servers, ns.njord.resolver.is and ns.skadi.resolver.is.
kernel.is shares its name server setup with other domains, such as hostname.is and resolver.is.
ns.njord.resolver.is and ns.skadi.resolver.is each resolve to one IP number: ns.njord.resolver.is points to 198.251.86.87 and ns.skadi.resolver.is points to 198.251.90.87.
Mail Servers
kernel.is routes its mail through a single mail server, mail.hostname.is.
kernel.is and domains like hostname.is share an identical mail server configuration.
There is one IP number for mail.hostname.is: 15.204.6.26.