ptr.is - robtex.com
ptr.is
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.ptr.is ⭐ | ||||||
| A | 2001:470:1d:97::1🇨🇦 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns1.ptr.is | ||||||
| A | 158.51.99.163🇺🇸 ASN-CQ-GIGENET158.51.98.0/23 TNAHosting | ||||||
| PTR | ns1.ptr.is | ||||||
| NS | ns2.ptr.is | ||||||
| A | 2001:470:1d:97::b🇨🇦 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns2.ptr.is | ||||||
| A | 64.44.157.211🇺🇸 NEXEON-164.44.144.0/20 DAL-1 | ||||||
| PTR | ns2.ptr.is | ||||||
| NS | ns3.ptr.is | ||||||
| A | 2001:470:1d:97::d🇨🇦 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns3.ptr.is | ||||||
| A | 23.95.91.132🇺🇸 Colocrossing-AS23.95.90.0/23 ColoCrossing | ||||||
| PTR | 23-95-91-132-host.colocrossing.com | ||||||
| MX | mx.headquarter.email ⭐ | ||||||
| A | 2001:470:1f09:ce::1🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | mx.headquarter.email | ||||||
| A | 91.109.118.73🇬🇧 UKSERVERS-AS91.109.112.0/21 UK Dedicated Servers Limited | ||||||
| PTR | mx.headquarter.email | ||||||
| TXT | v=spf1 +mx -all | ||||||
| SOA | ns1.ptr.ispostmaster@ptr.is 2025-09-01 #1 | ||||||
is
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.is ⭐ | ||||||
| NS | c.nic.is | ||||||
| NS | d.nic.is | ||||||
| NS | e.nic.is | ||||||
| NS | f.nic.is | ||||||
| SOA | a.nic.ishostmaster@isnic.is serial=1776971402 | ||||||
Subdomains
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns1.ptr.is2026-02-14 → 2026-04-23 · 2 obs
● 2026-04-23 19:32:52
●NSns2.ptr.is2026-02-14 → 2026-04-23 · 2 obs
● 2026-04-23 19:32:52
●NSns3.ptr.is2026-02-14 → 2026-04-23 · 2 obs
● 2026-04-23 19:32:52
●MXmx.headquarter.email2026-02-14 → 2026-04-23 · 2 obs
● 2026-04-23 19:32:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| is | a.nic.is, c.nic.is, d.nic.is, e.nic.is... | - |
| ptr.is | ns1.ptr.is, ns3.ptr.is, ns2.ptr.is | 3 records |
✅ Authoritative Response
Server:158.51.99.163
NS records: ns1.ptr.is, ns3.ptr.is, ns2.ptr.is
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptr.is (unsigned zone)
⏱️ Timing
Total: 656ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns3.ptr.is, ns1.ptr.is... |
| MX | 1 | mx.headquarter.email (pri: 5) |
| TXT | 1 | v=spf1 +mx -all |
| SOA | 1 | ns1.ptr.is postmaster.ptr.is |
📌 Glue Records Collected
Total: 3
In-bailiwick: 3 (ns3.ptr.is, ns2.ptr.is, ns1.ptr.is)
Analysis
Hierarchy
ptr.is is a parent of ns1.ptr.is, ns3.ptr.is and ns2.ptr.is.
Name Servers
ptr.is is delegated to three name servers: ns1.ptr.is, ns2.ptr.is and ns3.ptr.is.
ptr.is partially shares name servers with other domains, such as claudiney.info and headquarter.email.
Host names with two IP numbers:
ns1.ptr.is points to 2001:470:1d:97::1 and 158.51.99.163.
ns2.ptr.is points to 2001:470:1d:97::b and 64.44.157.211.
ns3.ptr.is points to 2001:470:1d:97::d and 23.95.91.132.
Mail Servers
ptr.is is handled by a single mail server, mx.headquarter.email.
ptr.is uses the same mail server setup as other domains such as claudiney.info, headquarter.email and ptr.net.br.
Host mx.headquarter.email resolves to two IPs: 2001:470:1f09:ce::1 and 91.109.118.73.