linuxday.org - dns.ninja
linuxday.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 172.105.113.72🇸🇬 AKAMAI-LINODE-AP172.105.112.0/20 Akamai Technologies | ||||||
| PTR | mta.kartero.org | ||||||
| NS | ns1.kartero.org ⭐ | ||||||
| A | 2a01:7e00::f03c:91ff:fe93:4dac🇬🇧 AKAMAI-LINODE-AP2a01:7e00::/32 Akamai Technologies | ||||||
| A | 109.74.201.63🇬🇧 AKAMAI-LINODE-AP109.74.192.0/20 Akamai Technologies | ||||||
| PTR | mail.kartero.org | ||||||
| NS | ns2.kartero.org | ||||||
| A | 178.79.139.186🇬🇧 AKAMAI-LINODE-AP178.79.128.0/18 Akamai Technologies | ||||||
| PTR | smtp.kartero.org | ||||||
| MX | mta.kartero.org ⭐ | ||||||
| A | 2400:8901::f03c:92ff:fef1:b034🇸🇬 AKAMAI-LINODE-AP2400:8901::/32 Akamai Technologies | ||||||
| PTR | mta.kartero.org | ||||||
| A | 45.118.133.164🇸🇬 AKAMAI-LINODE-AP45.118.132.0/22 Akamai Technologies | ||||||
| PTR | mta.kartero.org | ||||||
| A | 172.105.113.72🇸🇬 AKAMAI-LINODE-AP172.105.112.0/20 Akamai Technologies | ||||||
| PTR | mta.kartero.org | ||||||
| TXT | google-site-verification=-zIXV0_Juwic-qY0io-2_GO1OGX0BS66FGdv7pL3mMA | ||||||
| TXT | v=spf1 a mx -all | ||||||
| SOA | ns1.kartero.orghostmaster@kartero.org 2025-02-01 #8 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1784886382 | ||||||
Subdomains
www.linuxday.org |
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns1.kartero.org2015-08-24 → 2026-07-24 · 2 obs
● 2026-07-24 09:52:58
●NSns2.kartero.org2015-08-24 → 2026-07-24 · 2 obs
● 2026-07-24 09:52:58
○MXmail.kartero.org2015-08-24 → 2017-04-10 · 4 obs
● 2017-04-10 23:33:50
○ 2026-02-23 10:44:18
○ 2026-07-24 09:52:58
●MXmta.kartero.org2026-02-23 → 2026-07-24 · 3 obs
● 2026-02-23 10:44:18
● 2026-07-24 09:52:58
○MXsmtp.kartero.org2015-08-24 → 2017-04-10 · 4 obs
● 2017-04-10 23:33:50
○ 2026-02-23 10:44:18
○ 2026-07-24 09:52:58
○A109.74.201.632015-08-24 → 2017-04-10 · 4 obs
● 2017-04-10 23:33:50
○ 2026-02-23 10:44:18
○ 2026-07-24 09:52:58
●A172.105.113.722026-02-23 → 2026-07-24 · 3 obs
● 2026-02-23 10:44:18
● 2026-07-24 09:52:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| linuxday.org | ns2.kartero.org, ns1.kartero.org | 2 records |
✅ Authoritative Response
Server:178.79.139.186
NS records: ns2.kartero.org, ns1.kartero.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linuxday.org (unsigned zone)
⏱️ Timing
Total: 272ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 172.105.113.72 |
| NS | 2 | ns2.kartero.org, ns1.kartero.org |
| MX | 1 | mta.kartero.org (pri: 0) |
| TXT | 2 | v=spf1 a mx -all, google-site-verification=-zIXV0_Juwic-qY |
| SOA | 1 | ns1.kartero.org hostmaster.kartero.org |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.kartero.org, ns1.kartero.org)
Analysis
Hierarchy
www.linuxday.org is delegated beneath linuxday.org.
IP Addresses
linuxday.org resolves to one IP address: 172.105.113.72.
antonio.one, kalasag.org, gaffud.com and two other host names share IP numbers with linuxday.org.
Name Servers
linuxday.org is served by two delegated name servers, ns1.kartero.org and ns2.kartero.org.
linuxday.org uses the same name servers as several other domains — among them bluepoint.one, psylocke.net, livewire.com.ph and two more.
Hostnames that resolve to two IP addresses:
ns1.kartero.org maps to two IP addresses — 109.74.201.63 and 2a01:7e00::f03c:91ff:fe93:4dac.
Hosts with just one IP address:
ns2.kartero.org points to the IP address 178.79.139.186.
Mail Servers
Mail for linuxday.org is handled by a single mail server, mta.kartero.org.
linuxday.org uses an identical mail server configuration to several other domains — among them bluepoint.one, psylocke.net, livewire.com.ph and two more.
mta.kartero.org resolves to a set of three IP numbers: 45.118.133.164, 172.105.113.72 and 2400:8901::f03c:92ff:fef1:b034.