ns2.sg.opalstack.com - dns.ninja

`ns2.sg.opalstack.com`

DNSSEC	⚠️ Not signed
A	172.104.121.212^{🇯🇵 AKAMAI-LINODE-AP172.104.96.0/19 Akamai Technologies}
		PTR	`li1731-212.members.linode.com`
MX	`mx1.us.opalstack.com` ⭐
		A	108.62.123.121^{🇺🇸 LEASEWEB-US108.62.120.0/22 Leaseweb USA, Inc.}
			PTR	`mx1.us.opalstack.com`
MX	`mx2.us.opalstack.com` ⭐
		A	2605:fe80:2100:bf03:7::2^{🇺🇸 AS72032605:fe80::/32 Leaseweb USA, Inc. SFO-12 US}
			PTR	`mx2.us.opalstack.com`
		A	23.82.16.244^{🇺🇸 AS720323.82.16.0/21 Leaseweb USA, Inc.}
			PTR	`mx2.us.opalstack.com`
TXT	`v=spf1 include:spf.opalstack.com ~all`

`sg.opalstack.com`

	DNSSEC	⚠️ Not signed
	A	142.91.170.38^{🇺🇸 AS7203142.91.168.0/22 Leaseweb USA, Inc.}
	MX	`mx1.de.opalstack.com` ⭐
	MX	`mx2.de.opalstack.com` ⭐
	TXT	`v=spf1 include:spf.opalstack.com ~all`

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DNS History

6 records (3 active, 3 former)

○MXmx1.de.opalstack.com2026-02-18 → 2026-07-03 · 259 obs

○ 2026-02-15 17:37:42
○ 2026-02-15 21:14:04
● 2026-02-18 02:01:26
● 2026-02-18 14:34:50
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● 2026-02-20 05:58:40
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● 2026-02-21 02:07:26
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● 2026-03-01 19:49:12
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● 2026-03-04 07:56:20
● 2026-03-04 12:50:26
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● 2026-03-08 16:57:38
● 2026-03-09 04:11:46
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○ 2026-06-16 06:31:42
● 2026-06-16 12:05:18
● 2026-06-16 18:11:58
○ 2026-06-17 06:18:32
● 2026-06-17 14:43:16
○ 2026-06-19 05:16:52
● 2026-06-19 07:16:52
○ 2026-06-20 11:26:54
● 2026-06-22 03:14:50
○ 2026-06-22 19:44:20
● 2026-06-23 02:57:30
○ 2026-06-25 11:12:32
● 2026-06-25 23:50:06
○ 2026-06-27 10:49:48
● 2026-06-27 17:10:24
○ 2026-06-28 01:18:08
● 2026-06-28 02:11:52
○ 2026-06-28 05:06:22
● 2026-06-29 03:51:38
○ 2026-06-29 04:37:22
● 2026-06-30 02:01:04
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● 2026-07-01 02:36:12
○ 2026-07-01 08:15:36
● 2026-07-02 21:43:56
○ 2026-07-03 00:17:52
● 2026-07-03 08:16:08
○ 2026-07-04 10:18:56
○ 2026-07-04 22:40:22

●MXmx1.us.opalstack.com2020-01-12 → 2026-07-04 · 259 obs

● 2020-01-12 07:25:12
● 2026-02-15 21:14:04
○ 2026-02-18 02:01:26
○ 2026-02-18 14:34:50
● 2026-02-18 21:12:42
○ 2026-02-20 05:58:40
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● 2026-02-21 03:15:00
● 2026-02-25 07:48:16
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○ 2026-03-01 19:49:12
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● 2026-03-04 20:48:28
● 2026-03-07 18:14:42
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○ 2026-03-09 04:11:46
● 2026-03-09 09:56:44
● 2026-03-11 12:18:10
○ 2026-03-11 14:00:48
● 2026-03-11 22:27:04
● 2026-03-13 05:56:18
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○ 2026-03-14 19:14:34
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○MXmx2.de.opalstack.com2026-02-18 → 2026-07-03 · 259 obs

●MXmx2.us.opalstack.com2020-01-12 → 2026-07-04 · 259 obs

●A172.104.121.2122026-02-15 → 2026-07-04 · 3 obs

○ 2020-01-12 07:25:12
● 2026-02-15 17:37:42
● 2026-07-04 22:40:22

○A172.104.47.1392020-01-12 → 2020-01-12 · 3 obs

● 2020-01-12 07:25:12
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○ 2026-07-04 22:40:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
opalstack.com	ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com, ns1.de.opalstack.com	4 records

✅ Authoritative Response

Server:45.79.107.55

NS records: ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com, ns1.de.opalstack.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opalstack.com (unsigned zone)

⏱️ Timing

Total: 739ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.104.121.212`
MX	2	`mx2.us.opalstack.com (pri: 10), mx1.us.opalstack.com (pri: 10)`
TXT	1	`v=spf1 include:spf.opalstack.com ~all`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com...)

Analysis

Name Server Role

Among the domains delegated to ns2.sg.opalstack.com as a name server are upload.farm, susanto.info, trruu.com, hongkong.net, grokone.com and a handful of others.

It is common to see ns1.sg.opalstack.com, ns3.sg.opalstack.com and ns1.us.opalstack.com acting as name servers in combination with ns2.sg.opalstack.com.

IP Addresses

ns2.sg.opalstack.com has exactly one IP address — 172.104.121.212.

Among the host names that share IP numbers with ns2.sg.opalstack.com is li1731-212.members.linode.com, as one example.

Mail Servers

ns2.sg.opalstack.com uses two mail servers, mx1.us.opalstack.com and mx2.us.opalstack.com.

The mail server setup of ns2.sg.opalstack.com matches that of other domains such as refamily.com, hola.cl, ce080243.any.gs and two others.

ns2.sg.opalstack.com shares at least some of its mail servers with other domains, such as sailingholidays.gr.

Host names pointing to two IP addresses:

The A records for mx2.us.opalstack.com return 23.82.16.244 and 2605:fe80:2100:bf03:7::2.

Host names resolving to a single IP address:

mx1.us.opalstack.com resolves to the IP address 108.62.123.121.