linuxsymposium.org - dns.ninja

linuxsymposium.org

DNSSEC⚠️ Not signed
A2a01:4f8:1061:21b3::2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRwww735.your-server.de
A167.235.121.128🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC
NSns1.your-server.de ⭐
A2a01:4f8:0:1::5ddc:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRns1.your-server.de
A213.133.100.102🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1
PTRns1.your-server.de
NSns.second-ns.com
A2a01:4f8:0:a101::b:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRns.second-ns.com
A213.239.204.242🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2
PTRns.second-ns.com
NSns3.second-ns.de
A2001:67c:192c::add:b3🇩🇪 NORIS-NETWORK2001:67c:192c::/48
PTRns3.second-ns.de
A193.47.99.4🇩🇪 NORIS-NETWORK193.47.99.0/24
PTRns3.second-ns.de
MXwww735.your-server.de ⭐
A2a01:4f8:1061:21b3::2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK
PTRwww735.your-server.de
A167.235.121.128🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC
PTRwww735.your-server.de
TXTv=spf1 +a +mx ?all
SOAns1.your-server.depostmaster@your-server.de 2026-07-03 #1

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1783207630
rank #513657 globally
rank #39269 in the tld
WOT: SAFE (78/100)

Subdomains

www.linuxsymposium.org

Same first word

linuxsymposium.org

DNS History

35 records (6 active, 29 former)

20162017201820192020202120222023202420252026NSns.second-ns.comns1.your-server.dens3.second-ns.deben.ns.cloudflare.comdns0.easydns.comdns1.easydns.comdns2.easydns.netdns3.easydns.cans1.namebrightdns.comns10.digicertdns.comns11.digicertdns.comns12.digicertdns.comns13.digicertdns.netns14.digicertdns.netns15.digicertdns.netns2.namebrightdns.comuma.ns.cloudflare.comMXwww735.your-server.demail.linuxsymposium.orgmail1.linuxsymposium.orgmail1.namebrightmail.commail2.linuxsymposium.orgmail2.namebrightmail.comA167.235.121.1282a01:4f8:1061:21b3::2104.21.41.111172.67.164.113185.186.247.59198.27.77.52600:1f18:4ae:c607:d1d9:565f:b122:bfdb2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a2606:4700:3032::ac43:a4712606:4700:3035::6815:296f52.44.244.9854.165.131.183
○NSben.ns.cloudflare.com2026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
○NSdns0.easydns.com2015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
○NSdns1.easydns.com2015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
○NSdns2.easydns.net2015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
○NSdns3.easydns.ca2015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
●NSns.second-ns.com2026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○NSns1.namebrightdns.com2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
●NSns1.your-server.de2026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○NSns10.digicertdns.com2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns11.digicertdns.com2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns12.digicertdns.com2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns13.digicertdns.net2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns14.digicertdns.net2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns15.digicertdns.net2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○NSns2.namebrightdns.com2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
●NSns3.second-ns.de2026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○NSuma.ns.cloudflare.com2026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
○MXmail.linuxsymposium.org2015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
○MXmail1.linuxsymposium.org2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○MXmail1.namebrightmail.com2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
○MXmail2.linuxsymposium.org2026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○MXmail2.namebrightmail.com2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
●MXwww735.your-server.de2026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○A104.21.41.1112026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
●A167.235.121.1282026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○A172.67.164.1132026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
○A185.186.247.592026-05-30 → 2026-05-30 · 4 obs
○ 2026-03-15 00:13:08
● 2026-05-30 10:59:28
○ 2026-07-04 13:34:56
○ 2026-07-04 23:42:32
○A198.27.77.52015-08-22 → 2015-08-22 · 3 obs
● 2015-08-22 12:22:36
○ 2016-03-22 13:34:10
○ 2026-07-04 23:42:32
○A2600:1f18:4ae:c607:d1d9:565f:b122:bfdb2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
○A2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a2026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
○A2606:4700:3032::ac43:a4712026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
○A2606:4700:3035::6815:296f2026-03-15 → 2026-07-04 · 2 obs
○ 2026-03-15 00:13:08
○ 2026-07-04 23:42:32
●A2a01:4f8:1061:21b3::22026-07-04 → 2026-07-04 · 3 obs
○ 2026-05-30 10:59:28
● 2026-07-04 13:34:56
● 2026-07-04 23:42:32
○A52.44.244.982026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32
○A54.165.131.1832026-03-15 → 2026-03-15 · 4 obs
○ 2016-03-22 13:34:10
● 2026-03-15 00:13:08
○ 2026-05-30 10:59:28
○ 2026-07-04 23:42:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
linuxsymposium.orgns3.second-ns.de, ns1.your-server.de, ns.second-ns.com-

✅ Authoritative Response

Server:193.47.99.4

NS records: ns3.second-ns.de, ns1.your-server.de, ns.second-ns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxsymposium.org (unsigned zone)

⏱️ Timing

Total: 367ms | Queries: -

📄 Records

TypeCountSample Data
A1167.235.121.128
AAAA12a01:4f8:1061:21b3::2
NS3ns1.your-server.de, ns3.second-ns.de...
MX1www735.your-server.de (pri: 10)
TXT1v=spf1 +a +mx ?all
SOA1ns1.your-server.de postmaster.your-serve

Analysis

Hierarchy

The domain www.linuxsymposium.org falls under the parent linuxsymposium.org.

IP Addresses

linuxsymposium.org points to the IP addresses 167.235.121.128 and 2a01:4f8:1061:21b3::2

The host names exchange.digitalroyal.de, unlimited-communications.at, digitalroyal.de and agora.de all share IP numbers with linuxsymposium.org.

Name Servers

DNS for linuxsymposium.org is handled by three authoritative name servers: ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de.

At least some of linuxsymposium.org's name servers are shared with other domains, for example collin-labpilot.com, euroschirm.com, b.2.1.3.0.2.1.0.8.f.4.0.1.0.a.2.ip6.arpa and two more.

Three hostnames — ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de — each have two IP addresses: ns.second-ns.com has 213.239.204.242 and 2a01:4f8:0:a101::b:1, ns3.second-ns.de has 193.47.99.4 and 2001:67c:192c::add:b3, and ns1.your-server.de has 213.133.100.102 and 2a01:4f8:0:1::5ddc:1.

Mail Servers

linuxsymposium.org uses one mail server — www735.your-server.de.

www735.your-server.de directs to two IP numbers, 167.235.121.128 and 2a01:4f8:1061:21b3::2.