math.se - dns.ninja

`math.se`

DNSSEC	⚠️ Not signed
A	130.237.48.29^{🇸🇪 SUNET130.237.0.0/16 KTH-LAN}
		PTR	`web-mathse-1.sys.kth.se`
NS	`ns20.digicertdns.com` ⭐
		A	2600:1800:10::1:1f^{🇺🇸 Tiggee2600:1800:10::/48 DNS Made Easy anycast network}
			PTR	`ns20.digicertdns.com`
		A	208.94.148.223^{🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network}
			PTR	`ns20.digicertdns.com`
NS	`dns1.zaccodigitaltrustlabs.com`
		A	208.94.148.4^{🇺🇸 Tiggee208.94.148.0/24 DNS Made Easy anycast network}
			PTR	`ns10.dnsmadeeasy.com`
NS	`dns2.zaccodigitaltrustlabs.net`
		A	208.80.126.4^{🇺🇸 Tiggee208.80.126.0/24 DNS Made Easy anycast network}
			PTR	`ns12.dnsmadeeasy.com`
NS	`dns3.zaccodigitaltrustlabs.se`
		A	208.80.125.4^{🇺🇸 Tiggee208.80.125.0/24 DNS Made Easy anycast network}
			PTR	`ns13.dnsmadeeasy.com`
NS	`dns4.zaccodigitaltrustlabs.se`
		A	208.80.127.4^{🇺🇸 Tiggee208.80.127.0/24 DNS Made Easy anycast network}
			PTR	`ns14.dnsmadeeasy.com`
NS	`ns1.zaccodns.com`
		A	2a01:3f1:452::53^{🇸🇪 NETNOD-IX2a01:3f1:400::/38 NDS NORDIC-B $Id: route6_2a01:3f1:0400::-38,v 1.1 2019/10/04 10:08:26 mem Exp $}
			PTR	`ns1.zaccodns.com`
		A	194.58.193.52^{🇸🇪 NETNOD-IX194.58.193.0/24 NDS D}
			PTR	`ns1.zaccodns.com`
NS	`ns2.zaccodns.se`
		A	2a01:3f0:400::52^{🇸🇪 NETNOD-IX2a01:3f0::/32 SE-NETNOD-20070709 $Id: route6:2a01:3f0::-32,v 1.2 2010-05-20 10:35:04 nico Exp $}
			PTR	`ns2.zaccodns.se`
		A	185.42.137.104^{🇸🇪 NETNOD-IX185.42.136.0/23 $Id: route_185.42.136.0-23,v 1.2 2018/05/21 12:06:41 mem Exp $}
			PTR	`ns2.zaccodns.se`
MX	`mailfilter-ng-1.sunet.se` ⭐
		A	2001:6b0:8:2::207^{🇸🇪 SUNET2001:6b0::/32 The Swedish University Network}
		A	192.36.171.207^{🇸🇪 NORDUNET192.36.171.0/24 -SERVICES}
			PTR	`mailfilter-ng-1.sunet.se`
MX	`mailfilter-ng-3.sunet.se` ⭐
		A	2001:6b0:8:2::200^{🇸🇪 SUNET2001:6b0::/32 The Swedish University Network}
			PTR	`mailfilter-ng-3.sunet.se`
		A	192.36.171.200^{🇸🇪 NORDUNET192.36.171.0/24 -SERVICES}
			PTR	`mailfilter-ng-3.sunet.se`
MX	`mailfilter-ng-4.sunet.se` ⭐
		A	89.45.235.5^{🇸🇪 SUNET89.45.232.0/21 -AGGREGATE}
			PTR	`mailfilter-89-45-235-5.instance.cloud.sunet.se`
MX	`mailfilter-ng-2.sunet.se`⁽²⁰⁾
		A	89.45.235.13^{🇸🇪 SUNET89.45.232.0/21 -AGGREGATE}
			PTR	`mailfilter-89-45-235-13.instance.cloud.sunet.se`
TXT	`v=spf1 redirect=_spf.sys.kth.se`
TXT	`HARICA-PpO0w3GN0cnHgmLJsn9`
SOA	`ns20.digicertdns.com`dns@digicertdns.com 2009-01-01 #14

`se`

	DNSSEC	🔒 Signed (DS record present)
	NS	`catcher-in-the-rye.nic.se` ⭐
	NS	`a.ns.se`
	NS	`b.ns.se`
	NS	`c.ns.se`
	NS	`f.ns.se`
	NS	`g.ns.se`
	NS	`i.ns.se`
	NS	`m.ns.se`
	NS	`x.ns.se`
	NS	`y.ns.se`
	NS	`z.ns.se`
	TXT	`SE zone update: 2026-07-17 22:13:07 +0000 (EPOCH 1784326387) (auto)`
	TXT	`id:95e3f6c9-6d01-44e6-9b70-6441d7bacf57`
	SOA	`catcher-in-the-rye.nic.se`registry-default@nic.se serial=1784326790

WOT: SAFE (76/100)

Same first word

math.fi

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math.gallery

math.in.ua

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math.education

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maht.ru

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ahtm.de

DNS History

16 records (12 active, 4 former)

○NSa.ns.kth.se2009-01-21 → 2018-08-11 · 4 obs

● 2009-01-21 13:37:34
● 2018-08-11 13:16:44
○ 2026-02-16 10:27:14
○ 2026-07-17 23:27:52

○NSb.ns.kth.se2009-01-21 → 2018-08-11 · 4 obs

● 2009-01-21 13:37:34
● 2018-08-11 13:16:44
○ 2026-02-16 10:27:14
○ 2026-07-17 23:27:52

●NSdns1.zaccodigitaltrustlabs.com2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSdns2.zaccodigitaltrustlabs.net2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSdns3.zaccodigitaltrustlabs.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSdns4.zaccodigitaltrustlabs.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSns1.zaccodns.com2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSns2.zaccodns.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●NSns20.digicertdns.com2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●MXmailfilter-ng-1.sunet.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●MXmailfilter-ng-2.sunet.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●MXmailfilter-ng-3.sunet.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

●MXmailfilter-ng-4.sunet.se2026-02-16 → 2026-07-17 · 3 obs

○ 2018-08-11 13:16:44
● 2026-02-16 10:27:14
● 2026-07-17 23:27:52

○MXmx.kth.se2009-01-21 → 2018-08-11 · 4 obs

● 2009-01-21 13:37:34
● 2018-08-11 13:16:44
○ 2026-02-16 10:27:14
○ 2026-07-17 23:27:52

○MXmx5.kth.se2015-07-18 → 2018-08-11 · 5 obs

○ 2009-01-21 13:37:34
● 2015-07-18 13:20:26
● 2018-08-11 13:16:44
○ 2026-02-16 10:27:14
○ 2026-07-17 23:27:52

●A130.237.48.292009-01-21 → 2026-07-17 · 2 obs

● 2009-01-21 13:37:34
● 2026-07-17 23:27:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
se	g.ns.se, x.ns.se, y.ns.se, m.ns.se...	-
math.se	ns1.zaccodns.com, ns2.zaccodns.se, dns1.zaccodigitaltrustlabs.com, dns2.zaccodigitaltrustlabs.net...	4 records

✅ Authoritative Response

Server:208.80.127.4

NS records: ns1.zaccodns.com, ns2.zaccodns.se, dns1.zaccodigitaltrustlabs.com, dns2.zaccodigitaltrustlabs.net, dns3.zaccodigitaltrustlabs.se, dns4.zaccodigitaltrustlabs.se

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for math.se (unsigned zone)

⏱️ Timing

Total: 1037ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`130.237.48.29`
NS	6	`dns4.zaccodigitaltrustlabs.se, dns1.zaccodigitaltrustlabs.com...`
MX	4	`mailfilter-ng-3.sunet.se (pri: 10), mailfilter-ng-1.sunet.se (pri: 10)...`
TXT	2	`v=spf1 redirect=_spf.sys.kth.se, HARICA-PpO0w3GN0cnHgmLJsn9`
SOA	1	`ns20.digicertdns.com dns.digicertdns.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.zaccodns.se, dns3.zaccodigitaltrustlabs.se, dns4.zaccodigitaltrustlabs.se...)

Analysis

IP Addresses

math.se resolves to one IP address: 130.237.48.29.

web-mathse-1.sys.kth.se is an example of another host name that shares IP numbers with math.se.

Name Servers

math.se has 7 name servers — ns20.digicertdns.com, dns1.zaccodigitaltrustlabs.com, ns1.zaccodns.com and 4 others.

math.se shares at least some of its name servers with other domains, including fecelectric.com, 12udistrict.com, midillinicu.net and two others.

These name servers are frequently seen alongside dns2.zaccodigitaltrustlabs.net, dns3.zaccodigitaltrustlabs.se, dns4.zaccodigitaltrustlabs.se and 7 other name servers.

Hostnames that resolve to two IP addresses:

ns20.digicertdns.com resolves to 208.94.148.223 and 2600:1800:10::1:1f.

ns1.zaccodns.com resolves to 194.58.193.52 and 2a01:3f1:452::53.

ns2.zaccodns.se resolves to 185.42.137.104 and 2a01:3f0:400::52.

Hosts with just one IP address:

dns1.zaccodigitaltrustlabs.com resolves to 208.94.148.4.

dns2.zaccodigitaltrustlabs.net resolves to 208.80.126.4.

dns3.zaccodigitaltrustlabs.se resolves to 208.80.125.4.

dns4.zaccodigitaltrustlabs.se resolves to 208.80.127.4.