holaborg.is - robtex.com
holaborg.is
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=1775949002 | ||||||
Same first word
holaborg.is |
DNS History
11 records (4 active, 7 former)
○NSmx-1.reykjavik.is2015-05-15 → 2017-09-08 · 4 obs
● 2017-09-08 11:30:30
○ 2026-03-06 08:35:08
○ 2026-04-12 01:18:26
○NSmx-2.reykjavik.is2015-05-15 → 2017-09-08 · 4 obs
● 2017-09-08 11:30:30
○ 2026-03-06 08:35:08
○ 2026-04-12 01:18:26
●NSns-1.reykjavik.is2026-03-06 → 2026-04-12 · 3 obs
● 2026-03-06 08:35:08
● 2026-04-12 01:18:26
●NSns-2.reykjavik.is2026-03-06 → 2026-04-12 · 3 obs
● 2026-03-06 08:35:08
● 2026-04-12 01:18:26
●MXholaborg-is.mail.protection.outlook.com2026-03-06 → 2026-04-12 · 3 obs
● 2026-03-06 08:35:08
● 2026-04-12 01:18:26
○MXmx-1.reykjavik.is2015-05-15 → 2017-09-08 · 4 obs
● 2017-09-08 11:30:30
○ 2026-03-06 08:35:08
○ 2026-04-12 01:18:26
○MXmx-2.reykjavik.is2015-05-15 → 2017-09-08 · 4 obs
● 2017-09-08 11:30:30
○ 2026-03-06 08:35:08
○ 2026-04-12 01:18:26
●A20.31.19.1722026-03-06 → 2026-04-12 · 3 obs
● 2026-03-06 08:35:08
● 2026-04-12 01:18:26
○A37.60.237.1032017-09-08 → 2017-09-08 · 4 obs
● 2017-09-08 11:30:30
○ 2026-03-06 08:35:08
○ 2026-04-12 01:18:26
○A82.112.94.1622015-05-15 → 2015-05-15 · 3 obs
○ 2015-10-17 05:42:30
○ 2026-04-12 01:18:26
○A82.112.94.1642015-10-17 → 2017-07-27 · 5 obs
● 2015-10-17 05:42:30
● 2017-07-27 13:11:04
○ 2017-09-08 11:30:30
○ 2026-04-12 01:18:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| is | a.nic.is, f.nic.is, c.nic.is, d.nic.is... | - |
| holaborg.is | ns-1.reykjavik.is, ns-2.reykjavik.is | 2 records |
✅ Authoritative Response
Server:82.112.85.140
NS records: ns-1.reykjavik.is, ns-2.reykjavik.is
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for holaborg.is (unsigned zone)
⏱️ Timing
Total: 580ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 20.31.19.172 |
| NS | 2 | ns-2.reykjavik.is, ns-1.reykjavik.is |
| MX | 1 | holaborg-is.mail.protection.outlook.com |
| TXT | 3 | v=spf1 mx ip4:82.112.64.0/19 a:skyhqamx1, MS=ms44607923... |
| SOA | 1 | ns-1.reykjavik.is hostmaster.reykjavik.i |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-1.reykjavik.is, ns-2.reykjavik.is)
Analysis
IP Addresses
holaborg.is points to IP number 20.31.19.172.
For instance, other host names borgarsogusafn.is, ibudauppbygging.is, austurbaejarskoli.is, www.klettaskoli.is and menningarnott.is share IP numbers with holaborg.is.
Name Servers
holaborg.is is delegated to two name servers: ns-1.reykjavik.is and ns-2.reykjavik.is.
holaborg.is uses the same name server setup as other domains such as alftaborg.is, blafjoll.is, blasalir.is, engjaskoli.is and adalskipulag.is.
Host names with one IP number:
ns-1.reykjavik.is points to: 82.112.85.140.
ns-2.reykjavik.is points to: 82.112.85.141.
Mail Servers
holaborg.is is handled by a single mail server, holaborg-is.mail.protection.outlook.com.
Host name holaborg-is.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::, 2a01:111:f403:ca09::3, 2a01:111:f403:ca09::4, 2a01:111:f403:ca09::b, 52.101.68.25, 52.101.68.29, 52.101.73.26 and 52.101.73.30.