fallback3.holterman.com - robtex.com
fallback3.holterman.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a02:2870:c002:2::12🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V. | ||||||
| PTR | fallback3.ospito.eu | ||||||
| A | 46.17.14.251🇳🇱 LEASEWEB-NL-AMS-0146.17.14.0/23 Ospito B.V. | ||||||
holterman.com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 46.17.8.90🇳🇱 GLOBAL-E46.17.8.0/22 Ospito B.V. | ||||||
| NS | ns1.ospito.nl ⭐ | ||||||
| NS | ns2.ospito.net | ||||||
| NS | ns3.ospito.eu | ||||||
| MX | mail.holterman.com ⭐ | ||||||
| MX | fallback1.holterman.com(20) | ||||||
| MX | fallback2.holterman.com(30) | ||||||
| MX | fallback3.holterman.com(40) | ||||||
| TXT | v=spf1 a mx ip4:46.17.8.90 include:_spf.exactonline.nl -all | ||||||
| SOA | ns1.ospito.nlhostmaster@holterman.com 2026-07-05 #4 | ||||||
MX for
DNS History
2 records (2 active, 0 former)
●A2a02:2870:c002:2::122026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 12:20:22
● 2026-07-27 12:20:22
●A46.17.14.2512026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 12:20:22
● 2026-07-27 12:20:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| holterman.com | ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu | - |
✅ Authoritative Response
Server:46.17.15.250
NS records: ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 666ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.17.14.251 |
| AAAA | 1 | 2a02:2870:c002:2::12 |
Analysis
Mail Server Role
Mail for holterman.com is routed through the mail server fallback3.holterman.com.
mail.holterman.com, fallback1.holterman.com and fallback2.holterman.com are frequently seen as mail servers alongside fallback3.holterman.com.
IP Addresses
fallback3.holterman.com directs to two IP numbers, 46.17.14.251 and 2a02:2870:c002:2::12
fallback3.plaatjevankaatje.nl, fallback3.kuijsconnections.eu, fallback3.erikvangurp.com plus two other host names have IP numbers in common with fallback3.holterman.com.