htsprogram.com - robtex.com
htsprogram.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.surfnet.nl ⭐ | ||||||
| A | 2001:610:1:800a:192:87:106:101🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block | ||||||
| PTR | ns1.surfnet.nl | ||||||
| A | 192.87.106.101🇳🇱 SURFNET-NL192.87.0.0/16 SURFnet CIDR Block IV | ||||||
| PTR | ns1.surfnet.nl | ||||||
| NS | ns1.zurich.surf.net | ||||||
| A | 2001:620:0:9::1103🇨🇭 Switch2001:620::/32 SWITCH, The Swiss Education & Research Network | ||||||
| PTR | ns1.zurich.surf.net | ||||||
| A | 195.176.255.9🇨🇭 Switch195.176.224.0/19 SWITCH-AGGR.102 | ||||||
| PTR | ns1.zurich.surf.net | ||||||
| NS | ns2.surfnet.nl | ||||||
| A | 2001:610:3:200a:192:87:36:2🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block | ||||||
| PTR | ns2.surfnet.nl | ||||||
| A | 192.87.36.2🇳🇱 SURFNET-NL192.87.0.0/16 SURFnet CIDR Block IV | ||||||
| PTR | ns2.surfnet.nl | ||||||
| NS | ns3.surfnet.nl | ||||||
| A | 2001:610:0:800c:195:169:124:71🇳🇱 SURFNET-NL2001:610::/29 SURFnet IPv6 block | ||||||
| PTR | ns3.surfnet.nl | ||||||
| A | 195.169.124.71🇳🇱 SURFNET-NL195.169.0.0/16 SURFnet CIDR Block VI | ||||||
| SOA | ns1.surfnet.nldns-beheer@surf.nl 2026-11-05 #1 | ||||||
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=1794326376 | ||||||
Same first word
htsprogram.com |
htsprogram.org |
Similar names
Previous names
Next names
DNS History
6 records (4 active, 2 former)
●NSns1.surfnet.nl2015-08-16 → 2026-11-10 · 2 obs
● 2026-11-10 16:18:50
●NSns1.zurich.surf.net2015-08-16 → 2026-11-10 · 2 obs
● 2026-11-10 16:18:50
●NSns2.surfnet.nl2015-08-16 → 2026-11-10 · 2 obs
● 2026-11-10 16:18:50
●NSns3.surfnet.nl2015-08-16 → 2026-11-10 · 2 obs
● 2026-11-10 16:18:50
○A134.221.1.492020-04-06 → 2020-04-06 · 4 obs
● 2020-04-06 14:49:32
○ 2026-07-09 09:55:40
○ 2026-11-10 16:18:50
○A134.221.4.102015-08-16 → 2017-04-05 · 4 obs
● 2017-04-05 14:29:36
○ 2020-04-06 14:49:32
○ 2026-11-10 16:18:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net... | - |
| htsprogram.com | ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl, ns1.zurich.surf.net | - |
✅ Authoritative Response
Server:195.176.255.9
NS records: ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl, ns1.zurich.surf.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1039ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns1.zurich.surf.net, ns2.surfnet.nl... |
| SOA | 1 | ns1.surfnet.nl dns-beheer.surf.nl |
Analysis
Name Servers
The NS records for htsprogram.com point to four name servers: ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl and ns1.zurich.surf.net.
htsprogram.com has at least partial name server overlap with other domains, such as horizoncollege.nl, wageningencampus.nl, antisemitisme.nu and two others.
ns6.eur.nl, ns1.saxion.nl and ns2.saxion.nl — plus 7 other name servers — are commonly paired with these name servers.
ns1.surfnet.nl, ns2.surfnet.nl, ns3.surfnet.nl and ns1.zurich.surf.net all point to exactly two IP numbers each: ns1.surfnet.nl → 192.87.106.101 and 2001:610:1:800a:192:87:106:101; ns2.surfnet.nl → 192.87.36.2 and 2001:610:3:200a:192:87:36:2; ns3.surfnet.nl → 195.169.124.71 and 2001:610:0:800c:195:169:124:71; ns1.zurich.surf.net → 195.176.255.9 and 2001:620:0:9::1103.