fallback2.holterman.com - robtex.com
fallback2.holterman.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a02:2870:c002:1::12🇳🇱 LEASEWEB-NL-AMS-012a02:2870:8000::/33 Ospito B.V. | ||||||
| PTR | fallback2.ospito.net | ||||||
| A | 46.17.15.251🇳🇱 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:c002:1::122026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 16:52:54
● 2026-07-27 16:52:54
●A46.17.15.2512026-07-20 → 2026-07-27 · 2 obs
● 2026-07-20 13:56:56
● 2026-07-27 16:52:54
● 2026-07-27 16:52:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| holterman.com | ns2.ospito.net, ns1.ospito.nl, ns3.ospito.eu | - |
✅ Authoritative Response
Server:46.17.14.250
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: 608ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.17.15.251 |
| AAAA | 1 | 2a02:2870:c002:1::12 |
Analysis
Mail Server Role
The mail server fallback2.holterman.com processes email for holterman.com.
mail.holterman.com, fallback1.holterman.com and fallback3.holterman.com are often deployed as mail servers in conjunction with fallback2.holterman.com.
IP Addresses
fallback2.holterman.com has two IP addresses: 46.17.15.251 and 2a02:2870:c002:1::12
Two other host names, along with fallback.jsk-hosting.nl, fallback.bossie.be and fallback2.hindernisbaan.nl, also share IP numbers with fallback2.holterman.com.