isbnoffice.com - robtex.com
isbnoffice.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a06:2ec0:1:e::147🇳🇱 AS-ZXCS2a06:2ec0::/32 | ||||||
| PTR | web0147.zxcs.be | ||||||
| A | 185.220.172.5🇧🇪 AS-ZXCS185.220.172.0/24 VIMEXX | ||||||
| NS | ns.zxcs.nl ⭐ | ||||||
| A | 2a06:2ec0:1::10🇳🇱 AS-ZXCS2a06:2ec0::/32 | ||||||
| PTR | ns1.zxcs.nl | ||||||
| A | 185.104.28.19🇳🇱 AS-ZXCS185.104.28.0/24 | ||||||
| PTR | ns1.zxcs.nl | ||||||
| NS | ns.zxcs.be | ||||||
| A | 2a03:b0c0:3:d0::116:2001🇩🇪 DIGITALOCEAN2a03:b0c0:3::/48 DigitalOcean | ||||||
| PTR | ns2.zxcs.nl | ||||||
| A | 46.101.179.64🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean | ||||||
| PTR | ns2.zxcs.nl | ||||||
| NS | ns.zxcs.eu | ||||||
| A | 2a03:b0c0:2:d0::57:1001🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean | ||||||
| PTR | ns3.zxcs.nl | ||||||
| A | 178.62.208.8🇳🇱 DIGITALOCEAN178.62.192.0/18 DigitalOcean | ||||||
| PTR | ns3.zxcs.nl | ||||||
| MX | spamrelay.zxcs.nl ⭐ | ||||||
| A | 2a06:2ec0:1::ffec🇳🇱 AS-ZXCS2a06:2ec0::/32 | ||||||
| PTR | spamrelay.zxcs.nl | ||||||
| A | 185.104.28.12🇳🇱 AS-ZXCS185.104.28.0/24 | ||||||
| PTR | spamrelay.zxcs.nl | ||||||
| TXT | v=spf1 a mx ip4:185.220.172.5 ip6:2a06:2ec0:1:e:0:0:0:147 include:filter-out.... | ||||||
| SOA | ns.zxcs.nlhostmaster@isbnoffice.com 2026-03-22 #5 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1777121396 | ||||||
Subdomains
www.isbnoffice.com |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●MXspamrelay.zxcs.nl2026-03-24 → 2026-04-25 · 2 obs
● 2026-04-25 13:05:40
●A185.220.172.52026-03-24 → 2026-04-25 · 2 obs
● 2026-04-25 13:05:40
●A2a06:2ec0:1:e::1472026-03-24 → 2026-04-25 · 2 obs
● 2026-04-25 13:05:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| isbnoffice.com | ns.zxcs.nl, ns.zxcs.be, ns.zxcs.eu | - |
✅ Authoritative Response
Server:185.104.28.19
NS records: ns.zxcs.nl, ns.zxcs.be, ns.zxcs.eu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isbnoffice.com (unsigned zone)
⏱️ Timing
Total: 780ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.220.172.5 |
| AAAA | 1 | 2a06:2ec0:1:e::147 |
| NS | 3 | ns.zxcs.be, ns.zxcs.nl... |
| MX | 1 | spamrelay.zxcs.nl (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:185.220.172.5 ip6:2a06:2 |
| SOA | 1 | ns.zxcs.nl hostmaster.isbnoffice.com |
Analysis
Hierarchy
isbnoffice.com is the parent of www.isbnoffice.com.
IP Addresses
The entity isbnoffice.com points to two IP numbers: 2a06:2ec0:1:e::147 and 185.220.172.5.
For instance, other host names webbee.be, zorin-os-forum.be, www.djphilip.be, creatleenconsultancy.com and mail.rauwtrappers.be share IP numbers with isbnoffice.com.
Name Servers
The delegation for isbnoffice.com is handled by three name servers: ns.zxcs.be, ns.zxcs.eu and ns.zxcs.nl.
isbnoffice.com shares name servers with other domains at least partially, for example elmarkonline.nl, ecclesianet.be, winkelman-natuurlijk.nl, bigisfullofbeauty.nl and ligtvoet.eu.
These name servers are often used together with the name servers ns1.zxcs.nl, ns2.zxcs.nl, ns3.zxcs.nl, ns1.b-smarthosting.net and ns2.b-smarthosting.net.
Host names with two IPs:
ns.zxcs.be points to 2a03:b0c0:3:d0::116:2001 and 46.101.179.64
ns.zxcs.eu points to 2a03:b0c0:2:d0::57:1001 and 178.62.208.8
ns.zxcs.nl points to 2a06:2ec0:1::10 and 185.104.28.19
Mail Servers
isbnoffice.com is handled by a single mail server, spamrelay.zxcs.nl.
isbnoffice.com shares the same mail server setup as other domains, for instance osat.nl, scorekeeper.eu, chillsandthrills.nl, demmi.nl and maximizeyoursize.com.
isbnoffice.com shares some mail servers with other domains to some extent, for instance taxi-avz.nl and goedkooppakket.be.
spamrelay.zxcs.nl resolves to two IPs: 2a06:2ec0:1::ffec and 185.104.28.12.