mpmath.org - dns.ninja

`mpmath.org`

DNSSEC	⚠️ Not signed
A	78.159.99.205^{🇩🇪 LEASEWEB-DE-FRA-1078.159.96.0/19 Leaseweb DE}
		PTR	`opal6.opalstack.com`
NS	`ns2.de.opalstack.com` ⭐ ⚠️ Not in zone NS records
		A	139.162.223.59^{🇬🇧 AKAMAI-LINODE-AP139.162.192.0/19 Akamai Technologies}
			PTR	`ns2.de.opalstack.com`
NS	`ns1.de.opalstack.com` ⚠️ Not in zone NS records
		A	139.162.174.250^{🇩🇪 AKAMAI-LINODE-AP139.162.160.0/19 Akamai Technologies}
			PTR	`ns1.de.opalstack.com`
NS	`ns1.sg.opalstack.com` ⚠️ Not in zone NS records
		A	172.104.188.200^{🇸🇬 AKAMAI-LINODE-AP172.104.160.0/19 Akamai Technologies}
			PTR	`ns1.sg.opalstack.com`
NS	`ns1.us.opalstack.com`
		A	45.79.107.55^{🇺🇸 AKAMAI-LINODE-AP45.79.96.0/20 Akamai Technologies}
			PTR	`ns1.us.opalstack.com`
NS	`ns2.us.opalstack.com` ⚠️ Not in parent delegation
		A	23.92.21.232^{🇺🇸 AKAMAI-LINODE-AP23.92.16.0/21 Akamai Technologies}
			PTR	`ns2.us.opalstack.com`
NS	`ns3.de.opalstack.com` ⚠️ Not in zone NS records
		A	139.162.190.189^{🇩🇪 AKAMAI-LINODE-AP139.162.160.0/19 Akamai Technologies}
			PTR	`ns3.de.opalstack.com`
NS	`ns3.us.opalstack.com` ⚠️ Not in parent delegation
		A	45.56.74.5^{🇺🇸 AKAMAI-LINODE-AP45.56.64.0/20 Akamai Technologies}
			PTR	`ns3.us.opalstack.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`
SOA	`ns2.de.opalstack.com`hostmaster@mpmath.org 2026-05-26 #6

`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.info`hostmaster@donuts.email serial=1786642653

rank #708024 globally
rank #54229 in the tld
WOT: SAFE (73/100)

Subdomains

www.mpmath.org

Same first word

mpmath.com

mpmath.org

Similar names

pathmm.com

hmtmap.com

hmmpta.org

mathmp.com

DNS History

23 records (10 active, 13 former)

●NSns1.de.opalstack.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

●NSns1.sg.opalstack.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

●NSns1.us.opalstack.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

○NSns1.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

●NSns2.de.opalstack.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

○NSns2.sg.opalstack.com2026-04-05 → 2026-07-19 · 9 obs

○ 2026-03-30 11:27:44
● 2026-04-05 19:00:08
○ 2026-04-08 20:17:44
○ 2026-05-22 15:44:32
● 2026-05-28 16:02:16
○ 2026-06-26 19:25:20
● 2026-07-19 19:31:46
○ 2026-07-26 06:46:44
○ 2026-08-13 18:11:54

●NSns2.us.opalstack.com2026-04-05 → 2026-08-13 · 9 obs

○ 2026-03-30 11:27:44
● 2026-04-05 19:00:08
● 2026-05-22 15:44:32
○ 2026-05-28 16:02:16
● 2026-07-01 12:19:48
○ 2026-07-04 14:50:08
● 2026-07-19 19:31:46
○ 2026-07-26 06:46:44
● 2026-08-13 18:11:54

○NSns2.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

●NSns3.de.opalstack.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

○NSns3.sg.opalstack.com2026-04-05 → 2026-06-24 · 10 obs

○ 2026-03-30 11:27:44
● 2026-04-05 19:00:08
○ 2026-04-08 20:17:44
○ 2026-05-22 15:44:32
● 2026-05-28 16:02:16
● 2026-06-16 18:11:58
○ 2026-06-22 01:57:56
● 2026-06-24 10:02:20
○ 2026-06-26 19:25:20
○ 2026-08-13 18:11:54

●NSns3.us.opalstack.com2026-04-08 → 2026-08-13 · 7 obs

○ 2026-04-05 19:00:08
● 2026-04-08 20:17:44
● 2026-05-01 07:44:34
○ 2026-05-22 15:44:32
● 2026-07-19 19:31:46
○ 2026-07-26 06:46:44
● 2026-08-13 18:11:54

○NSns3.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○NSns4.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○MXmx1.de.opalstack.com2026-03-30 → 2026-08-13 · 12 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
○ 2026-04-05 19:00:08
● 2026-04-08 20:17:44
● 2026-06-16 18:11:58
○ 2026-06-22 01:57:56
● 2026-06-24 10:02:20
○ 2026-06-27 19:36:36
● 2026-07-04 14:50:08
○ 2026-07-19 19:31:46
● 2026-08-13 09:42:58
○ 2026-08-13 18:11:54

●MXmx1.us.opalstack.com2026-04-05 → 2026-08-13 · 11 obs

○ 2026-03-30 11:27:44
● 2026-04-05 19:00:08
○ 2026-04-08 20:17:44
○ 2026-06-16 18:11:58
● 2026-06-22 01:57:56
○ 2026-06-24 10:02:20
● 2026-06-27 19:36:36
○ 2026-07-04 14:50:08
● 2026-07-19 19:31:46
○ 2026-08-13 09:42:58
● 2026-08-13 18:11:54

○MXmx2.de.opalstack.com2026-03-30 → 2026-08-13 · 12 obs

●MXmx2.us.opalstack.com2026-04-05 → 2026-08-13 · 11 obs

○MXmx7.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○MXmx8.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○MXmx9.webfaction.com2015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○A108.59.4.872015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

○A2604:9a00:2010:a00d:3::842015-07-07 → 2017-03-13 · 4 obs

● 2015-07-07 09:43:00
● 2017-03-13 13:58:22
○ 2026-03-30 11:27:44
○ 2026-08-13 18:11:54

●A78.159.99.2052026-03-30 → 2026-08-13 · 3 obs

○ 2017-03-13 13:58:22
● 2026-03-30 11:27:44
● 2026-08-13 18:11:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
mpmath.org	ns1.de.opalstack.com, ns1.sg.opalstack.com, ns1.us.opalstack.com, ns2.de.opalstack.com...	-

✅ Authoritative Response

Server:172.104.188.200

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mpmath.org (unsigned zone)

⏱️ Timing

Total: 927ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`78.159.99.205`
NS	3	`ns1.de.opalstack.com, ns2.de.opalstack.com...`
MX	2	`mx2.de.opalstack.com (pri: 10), mx1.de.opalstack.com (pri: 10)`
TXT	1	`v=spf1 include:spf.opalstack.com ~all`
SOA	1	`ns2.sg.opalstack.com hostmaster.mpmath.o`

Analysis

Hierarchy

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

IP Addresses

mpmath.org resolves to one IP address: 78.159.99.205.

www.gaga.rs, liambyrnes.com, 4krs.com and two other host names share IP numbers with mpmath.org.

Name Servers

The DNS delegation for mpmath.org covers 7 name servers: ns1.de.opalstack.com, ns2.de.opalstack.com, ns3.de.opalstack.com and 4 more.

At least some of mpmath.org's name servers are shared with other domains, for example freethinker.co.uk, moralsensetest.com, diariopyme.cl and two more.

These name servers tend to co-occur with ns1.us.opalstack.com, ns2.us.opalstack.com, ns3.us.opalstack.com and 3 other name servers in the same DNS delegations.

Hosts with just one IP address:

ns1.de.opalstack.com points to the IP address 139.162.174.250.

ns2.de.opalstack.com points to the IP address 139.162.223.59.

ns3.de.opalstack.com points to the IP address 139.162.190.189.

ns1.sg.opalstack.com points to the IP address 172.104.188.200.

ns1.us.opalstack.com points to the IP address 45.79.107.55.

ns2.us.opalstack.com points to the IP address 23.92.21.232.

ns3.us.opalstack.com points to the IP address 45.56.74.5.

Mail Servers

Mail for mpmath.org is handled by two mail servers — mx1.us.opalstack.com and mx2.us.opalstack.com.

mpmath.org uses an identical mail server configuration to several other domains — among them homail.co.th, vending-cama.com, elcolectivero_2.tripod.com.ar and two more.

mpmath.org overlaps on mail servers with certain other domains, tj.org among them.

Hostnames that resolve to two IP addresses:

mx2.us.opalstack.com maps to two IP addresses — 23.82.16.244 and 2605:fe80:2100:bf03:7::2.

Hosts with just one IP address:

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