`symposionline.com`

DNSSEC	⚠️ Not signed
A	141.193.213.10^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
A	141.193.213.11^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
NS	`ns2.inwx.de` ⭐
		A	2001:67c:10b8::104^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.anycastdns.ch`
			PTR	`ns2.inwx.ch`
			PTR	`ns2.inwx.com`
			PTR	`ns2.inwx.de`
			PTR	`b.xnameserver.de`
			PTR	`ns2.inwx.es`
			PTR	`ns.domrobot.net`
		A	176.97.158.104^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.anycastdns.ch`
			PTR	`ns2.inwx.ch`
			PTR	`ns2.inwx.com`
			PTR	`ns2.inwx.de`
			PTR	`b.xnameserver.de`
			PTR	`ns2.inwx.es`
			PTR	`ns.domrobot.net`
NS	`ns.inwx.de`
		A	2001:67c:1bc::104^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.anycastdns.ch`
			PTR	`ns.inwx.ch`
			PTR	`ns.domrobot.com`
			PTR	`ns.inwx.com`
			PTR	`ns.inwx.de`
			PTR	`a.xnameserver.de`
			PTR	`ns.inwx.es`
		A	192.174.68.104^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.anycastdns.ch`
			PTR	`ns.inwx.ch`
			PTR	`ns.domrobot.com`
			PTR	`ns.inwx.com`
			PTR	`ns.inwx.de`
			PTR	`a.xnameserver.de`
			PTR	`ns.inwx.es`
NS	`ns3.inwx.eu`
		A	2a02:d500::53^{🇩🇪 INWX2a02:d500::/29}
			PTR	`c.xnameserver.de`
			PTR	`ns3.inwx.eu`
			PTR	`ns.domrobot.org`
		A	45.87.158.53^{🇩🇪 INWX45.87.158.0/23}
			PTR	`c.xnameserver.de`
			PTR	`ns3.inwx.eu`
			PTR	`ns.domrobot.org`
MX	`symposionline-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::2^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du2pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::8^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
		A	52.101.68.3^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db7pr03cu00403.inbound.protection.outlook.com`
		A	52.101.73.8^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr04cu00500.inbound.protection.outlook.com`
		A	52.101.73.16^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
		A	52.101.73.22^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00106.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns.inwx.de`hostmaster@inwx.de 2026-02-12 #4

`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.net`nstld@verisign-grs.com serial=1782551280

Subdomains

mail.symposionline.com

Same first word

symposionline.com

DNS History

17 records (6 active, 11 former)

○NSdns1.inode.at2015-07-02 → 2016-04-30 · 4 obs

● 2015-07-02 12:30:02
● 2016-04-30 04:09:18
○ 2017-02-17 12:31:20
○ 2026-06-27 09:26:38

○NSdns2.inode.at2015-07-02 → 2016-04-30 · 4 obs

● 2015-07-02 12:30:02
● 2016-04-30 04:09:18
○ 2017-02-17 12:31:20
○ 2026-06-27 09:26:38

●NSns.inwx.de2020-02-04 → 2026-06-27 · 3 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
● 2026-06-27 09:26:38

○NSns1.upc.biz2017-02-17 → 2017-02-17 · 4 obs

○ 2016-04-30 04:09:18
● 2017-02-17 12:31:20
○ 2020-02-04 04:39:40
○ 2026-06-27 09:26:38

●NSns2.inwx.de2020-02-04 → 2026-06-27 · 3 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
● 2026-06-27 09:26:38

○NSns2.upc.biz2017-02-17 → 2017-02-17 · 4 obs

○ 2016-04-30 04:09:18
● 2017-02-17 12:31:20
○ 2020-02-04 04:39:40
○ 2026-06-27 09:26:38

●NSns3.inwx.eu2020-02-04 → 2026-06-27 · 3 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
● 2026-06-27 09:26:38

○NSns4.inwx.com2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
○ 2026-03-24 15:25:22
○ 2026-06-27 09:26:38

○NSns5.inwx.net2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
○ 2026-03-24 15:25:22
○ 2026-06-27 09:26:38

○MXmail.seminargo.com2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
○ 2026-03-24 15:25:22
○ 2026-06-27 09:26:38

○MXmail.symposionline.com2015-07-02 → 2017-02-17 · 4 obs

● 2015-07-02 12:30:02
● 2017-02-17 12:31:20
○ 2020-02-04 04:39:40
○ 2026-06-27 09:26:38

○MXseminargo-com.mail.protection.outlook.com2020-02-04 → 2020-02-04 · 4 obs

○ 2017-02-17 12:31:20
● 2020-02-04 04:39:40
○ 2026-03-24 15:25:22
○ 2026-06-27 09:26:38

●MXsymposionline-com.mail.protection.outlook.com2026-03-24 → 2026-06-27 · 3 obs

○ 2020-02-04 04:39:40
● 2026-03-24 15:25:22
● 2026-06-27 09:26:38

●A141.193.213.102026-03-24 → 2026-06-27 · 3 obs

○ 2020-02-04 04:39:40
● 2026-03-24 15:25:22
● 2026-06-27 09:26:38

●A141.193.213.112026-03-24 → 2026-06-27 · 3 obs

○ 2020-02-04 04:39:40
● 2026-03-24 15:25:22
● 2026-06-27 09:26:38

○A212.186.228.1822015-07-02 → 2015-07-02 · 3 obs

● 2015-07-02 12:30:02
○ 2015-11-12 22:35:14
○ 2026-06-27 09:26:38

○A91.220.239.2372015-11-12 → 2020-02-04 · 5 obs

○ 2015-07-02 12:30:02
● 2015-11-12 22:35:14
● 2020-02-04 04:39:40
○ 2026-03-24 15:25:22
○ 2026-06-27 09:26:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net...	-
symposionline.com	ns2.inwx.de, ns.inwx.de, ns3.inwx.eu	-

✅ Authoritative Response

Server:45.87.158.53

NS records: ns2.inwx.de, ns.inwx.de, ns3.inwx.eu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for symposionline.com (unsigned zone)

⏱️ Timing

Total: 525ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`141.193.213.10, 141.193.213.11`
NS	3	`ns2.inwx.de, ns.inwx.de...`
MX	1	`symposionline-com.mail.protection.outloo`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
SOA	1	`ns.inwx.de hostmaster.inwx.de`

Analysis

Hierarchy

mail.symposionline.com is delegated beneath symposionline.com.

IP Addresses

symposionline.com has two IP addresses: 141.193.213.10 and 141.193.213.11

Two other host names, along with capsher.com, enviroscienceinc.com and refdallas.com, also share IP numbers with symposionline.com.

Name Servers

symposionline.com has three name servers — ns2.inwx.de, ns.inwx.de and ns3.inwx.eu.

There is at least partial name server overlap between symposionline.com and other domains — cinque-terre.info, kamido.com, kachel.name and two more among them.

These name servers are routinely deployed together with the name servers ns3.inwx.de.

Each of ns2.inwx.de, ns.inwx.de and ns3.inwx.eu points to two IP numbers. ns2.inwx.de points to 176.97.158.104 and 2001:67c:10b8::104. ns.inwx.de points to 192.174.68.104 and 2001:67c:1bc::104. ns3.inwx.eu points to 45.87.158.53 and 2a02:d500::53.

Mail Servers

The sole mail server for symposionline.com is symposionline-com.mail.protection.outlook.com.

With 8 IP addresses total, symposionline-com.mail.protection.outlook.com resolves to 52.101.68.3, 52.101.73.8, 52.101.73.16 and 5 others.

symposionline.com - robtex.com