dolfijn.nu - robtex.com
dolfijn.nu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 5.157.84.150🇳🇱 CLDIN-NL5.157.80.0/21 | ||||||
| PTR | redirect.server40.firstfind.nl | ||||||
| NS | ns3.firstfind.nl ⭐ | ||||||
| A | 2a01:b940:1057::53🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING | ||||||
| PTR | ns3.firstfind.nl | ||||||
| A | 5.157.86.222🇳🇱 CLDIN-NL5.157.80.0/21 | ||||||
| PTR | ns3.firstfind.nl | ||||||
| NS | ns4.firstfind.nl | ||||||
| A | 2a01:b940:1057::54🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING | ||||||
| A | 5.157.87.222🇳🇱 CLDIN-NL5.157.80.0/21 | ||||||
| PTR | ns4.firstfind.nl | ||||||
| NS | ns5.firstfind.net | ||||||
| A | 2a03:b0c0:2:d0::1183:f001🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean | ||||||
| PTR | ns5.firstfind.net | ||||||
| A | 178.128.248.2🇳🇱 DIGITALOCEAN178.128.240.0/20 DigitalOcean | ||||||
| PTR | ns5.firstfind.net | ||||||
| MX | server40.firstfind.nl ⭐ | ||||||
| A | 5.157.84.149🇳🇱 CLDIN-NL5.157.80.0/21 | ||||||
| PTR | server40.firstfind.nl | ||||||
| SOA | ns3.firstfind.nlhostmaster@firstfind.nl 2017-01-27 #0 | ||||||
nu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | catcher-in-the-rye.nic.nu ⭐ | ||||||
| NS | a.ns.nu | ||||||
| NS | c.ns.nu | ||||||
| NS | d.ns.nu | ||||||
| NS | m.ns.nu | ||||||
| NS | y.ns.nu | ||||||
| NS | z.ns.nu | ||||||
| TXT | id:eac1eab3-c44d-47c8-a8b2-552bf3a98d7c | ||||||
| TXT | NU zone update: 2026-03-26 07:43:13 +0000 (EPOCH 1774510993) (auto) | ||||||
| SOA | catcher-in-the-rye.nic.nuhostmaster@nic.nu serial=1774511096 | ||||||
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
●NSns3.firstfind.nl2018-06-17 → 2026-03-26 · 2 obs
● 2026-03-26 08:42:44
●NSns4.firstfind.nl2018-06-17 → 2026-03-26 · 2 obs
● 2026-03-26 08:42:44
●NSns5.firstfind.net2018-06-17 → 2026-03-26 · 2 obs
● 2026-03-26 08:42:44
○MXmx1.firstfind.nl2018-06-17 → 2018-06-17 · 2 obs
○ 2026-03-26 08:42:44
○MXmx2.firstfind.nl2018-06-17 → 2018-06-17 · 2 obs
○ 2026-03-26 08:42:44
●MXserver40.firstfind.nl2018-06-17 → 2026-03-26 · 2 obs
● 2026-03-26 08:42:44
○A109.235.74.1582018-06-17 → 2018-06-17 · 2 obs
○ 2026-03-26 08:42:44
●A5.157.84.1502026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 08:42:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nu | z.ns.nu, a.ns.nu, m.ns.nu, c.ns.nu... | 12 records |
| dolfijn.nu | ns5.firstfind.net, ns4.firstfind.nl, ns3.firstfind.nl | - |
✅ Authoritative Response
Server:178.128.248.2
NS records: ns5.firstfind.net, ns4.firstfind.nl, ns3.firstfind.nl
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dolfijn.nu (unsigned zone)
⏱️ Timing
Total: 531ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 5.157.84.150 |
| NS | 3 | ns3.firstfind.nl, ns5.firstfind.net... |
| MX | 1 | server40.firstfind.nl (pri: 10) |
| SOA | 1 | ns3.firstfind.nl hostmaster.firstfind.nl |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.ns.nu, y.ns.nu, m.ns.nu...)
Analysis
IP Addresses
dolfijn.nu maps to IP address 5.157.84.150.
Other host names, for instance familybank.nl, refcam.de, torusgaas.com, dobrarada.nl and wepsen.nl share IP numbers with dolfijn.nu.
Name Servers
dolfijn.nu is delegated to name servers ns5.firstfind.net, ns3.firstfind.nl and ns4.firstfind.nl.
dolfijn.nu at least partially shares name servers with other domains such as parkid.de, greenco.nl, cibiday.online, saabtwente.nl and rootfolk.com.
Host names with two IP numbers:
ns5.firstfind.net points to 2a03:b0c0:2:d0::1183:f001 and 178.128.248.2.
ns3.firstfind.nl points to 2a01:b940:1057::53 and 5.157.86.222.
ns4.firstfind.nl points to 2a01:b940:1057::54 and 5.157.87.222.
Mail Servers
dolfijn.nu is handled by a single mail server, server40.firstfind.nl.
dolfijn.nu shares the same mail server setup as other domains, including nielson-im.com, interadvocaat.com, r2030.nl, papercity.org and portagonist.com.
dolfijn.nu shares some mail servers with other domains, for instance uniteeurotherapy.nl, flexmix.nl and oponzeserver.nl.
server40.firstfind.nl points to one IP number: 5.157.84.149.