`columbialine.com`

DNSSEC	⚠️ Not signed
A	212.227.173.187^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
		PTR	`ip212-227-173-187.pbiaas.com`
NS	`dns1.netsons.net` ⭐
		A	46.252.159.53^{🇮🇹 ASSUPERNOVA46.252.144.0/20 Netsons Network}
			PTR	`dns1.netsons.net`
NS	`dns2.netsons.net`
		A	46.252.159.54^{🇮🇹 ASSUPERNOVA46.252.144.0/20 Netsons Network}
			PTR	`dns2.netsons.net`
NS	`dns3.netsons.net`
		A	51.195.116.88^{🇫🇷 OVH51.195.0.0/16}
			PTR	`dns3.netsons.net`
NS	`dns4.netsons.net`
		A	51.255.173.224^{🇫🇷 OVH51.254.0.0/15}
			PTR	`dns4.netsons.net`
MX	`mail.columbialine.com` ⭐
		A	212.227.173.187^{🇩🇪 IONOS-AS212.227.0.0/16 IONOS-PA-2}
			PTR	`ip212-227-173-187.pbiaas.com`
TXT	`v=spf1 a mx ip4:82.165.34.183 exists:columbialine.com ~all`
SOA	`dns1.netsons.net`admin@netsons.com 2023-09-22 #3

`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=1778439591

Subdomains

mail.columbialine.com

Same first word

columbialine.com

columbialine.net

DNS History

12 records (6 active, 6 former)

●NSdns1.netsons.net2020-01-30 → 2026-05-10 · 3 obs

○ 2017-03-13 14:47:08
● 2020-01-30 18:02:16
● 2026-05-10 19:19:52

●NSdns2.netsons.net2020-01-30 → 2026-05-10 · 3 obs

○ 2017-03-13 14:47:08
● 2020-01-30 18:02:16
● 2026-05-10 19:19:52

●NSdns3.netsons.net2020-01-30 → 2026-05-10 · 3 obs

○ 2017-03-13 14:47:08
● 2020-01-30 18:02:16
● 2026-05-10 19:19:52

●NSdns4.netsons.net2020-01-30 → 2026-05-10 · 3 obs

○ 2017-03-13 14:47:08
● 2020-01-30 18:02:16
● 2026-05-10 19:19:52

○NSns1.netsons.com2015-08-03 → 2017-03-13 · 4 obs

● 2015-08-03 01:59:26
● 2017-03-13 14:47:08
○ 2020-01-30 18:02:16
○ 2026-05-10 19:19:52

○NSns2.netsons.com2015-08-03 → 2017-03-13 · 4 obs

● 2015-08-03 01:59:26
● 2017-03-13 14:47:08
○ 2020-01-30 18:02:16
○ 2026-05-10 19:19:52

○NSns3.netsons.com2016-06-18 → 2017-03-13 · 5 obs

○ 2015-08-03 01:59:26
● 2016-06-18 06:14:42
● 2017-03-13 14:47:08
○ 2020-01-30 18:02:16
○ 2026-05-10 19:19:52

○NSns4.netsons.com2016-06-18 → 2017-03-13 · 5 obs

○ 2015-08-03 01:59:26
● 2016-06-18 06:14:42
● 2017-03-13 14:47:08
○ 2020-01-30 18:02:16
○ 2026-05-10 19:19:52

●MXmail.columbialine.com2015-08-03 → 2026-05-10 · 2 obs

● 2015-08-03 01:59:26
● 2026-05-10 19:19:52

○A109.203.109.1752016-06-18 → 2020-01-30 · 5 obs

○ 2015-11-26 03:24:24
● 2016-06-18 06:14:42
● 2020-01-30 18:02:16
○ 2026-04-08 14:04:40
○ 2026-05-10 19:19:52

○A158.255.43.542015-08-03 → 2015-11-26 · 4 obs

● 2015-08-03 01:59:26
● 2015-11-26 03:24:24
○ 2016-06-18 06:14:42
○ 2026-05-10 19:19:52

●A212.227.173.1872026-04-08 → 2026-05-10 · 3 obs

○ 2020-01-30 18:02:16
● 2026-04-08 14:04:40
● 2026-05-10 19:19:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, i.gtld-servers.net, h.gtld-servers.net...	-
columbialine.com	dns1.netsons.net, dns2.netsons.net, dns3.netsons.net, dns4.netsons.net	-

✅ Authoritative Response

Server:51.255.173.224

NS records: dns1.netsons.net, dns2.netsons.net, dns3.netsons.net, dns4.netsons.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 483ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`212.227.173.187`
NS	4	`dns2.netsons.net, dns3.netsons.net...`
MX	1	`mail.columbialine.com (pri: 10)`
TXT	1	`v=spf1 a mx ip4:82.165.34.183 exists:col`
SOA	1	`dns1.netsons.net admin.netsons.com`

Analysis

Hierarchy

columbialine.com is the parent of mail.columbialine.com.

IP Addresses

columbialine.com resolves to a single IP address: 212.227.173.187.

Other host names including ip212-227-173-187.pbiaas.com, host62112.columbialine.net, nextsense.net, mail.nextsense.it and mail.columbialine.net share IP numbers with columbialine.com.

Name Servers

columbialine.com is delegated to four name servers: dns1.netsons.net, dns2.netsons.net, dns3.netsons.net and dns4.netsons.net.

columbialine.com at least partially shares name servers with other domains, including gutenbergcalabria.it, omica.it, parrocchiadicoreno.it, yarra.it and bormashop.com.

Hostnames with a single IP:

dns1.netsons.net points to 46.252.159.53

dns2.netsons.net points to 46.252.159.54

dns3.netsons.net points to 51.195.116.88

dns4.netsons.net points to 51.255.173.224

Mail Servers

columbialine.com is handled by a single mail server, mail.columbialine.com.

mail.columbialine.com points to a single IP: 212.227.173.187.

columbialine.com - robtex.com