mathkb.com - dns.ninja

`mathkb.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:23d7^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:b3e6^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.35.215^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.179.230^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`adrian.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a39^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c039^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`adrian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2039^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`adrian.ns.cloudflare.com`
		A	108.162.192.57^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	172.64.32.57^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
		A	173.245.58.57^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`adrian.ns.cloudflare.com`
NS	`yichun.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`yichun.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`yichun.ns.cloudflare.com`
		A	108.162.193.248^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	172.64.33.248^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
		A	173.245.59.248^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yichun.ns.cloudflare.com`
TXT	`google-site-verification=xfOelPPupM_mQ3qhmGDEhJ3H3WaAxkzk3sBm7524ruE`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.35.215, 172.67.179.230
		IPv6 hints	2606:4700:3032::6815:23d7, 2606:4700:3036::ac43:b3e6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=220, name=cloudflare-ech.com
SOA	`adrian.ns.cloudflare.com`dns@cloudflare.com serial=2410599463

`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=1785444227

WOT: SAFE (90/100)

Same first word

mathkb.com

Similar names

mtbakh.com

mktbah.club

mktbah.com

matbkh.com

khamtb.com

kbhamt.dk

DNS History

33 records (6 active, 27 former)

●NSadrian.ns.cloudflare.com2026-06-12 → 2026-07-30 · 3 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
● 2026-07-30 21:11:04

○NSns1.247-domain-registration.com2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 09:55:34
○ 2015-05-16 06:48:46
○ 2026-07-30 21:11:04

○NSns1.parkingcrew.net2015-05-16 → 2017-02-02 · 5 obs

○ 2008-03-15 09:55:34
● 2015-05-16 06:48:46
● 2017-02-02 15:06:20
○ 2020-01-23 13:04:14
○ 2026-07-30 21:11:04

○NSns1.parklogic.com2020-01-23 → 2026-03-08 · 5 obs

○ 2017-02-02 15:06:20
● 2020-01-23 13:04:14
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○NSns19.domaincontrol.com2026-05-12 → 2026-05-16 · 5 obs

○ 2026-03-08 03:45:56
● 2026-05-12 20:04:46
● 2026-05-16 13:58:04
○ 2026-06-12 23:28:56
○ 2026-07-30 21:11:04

○NSns2.247-domain-registration.com2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 09:55:34
○ 2015-05-16 06:48:46
○ 2026-07-30 21:11:04

○NSns2.parkingcrew.net2015-05-16 → 2017-02-02 · 5 obs

○ 2008-03-15 09:55:34
● 2015-05-16 06:48:46
● 2017-02-02 15:06:20
○ 2020-01-23 13:04:14
○ 2026-07-30 21:11:04

○NSns2.parklogic.com2020-01-23 → 2026-03-08 · 5 obs

○ 2017-02-02 15:06:20
● 2020-01-23 13:04:14
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○NSns20.domaincontrol.com2026-05-12 → 2026-05-16 · 5 obs

○ 2026-03-08 03:45:56
● 2026-05-12 20:04:46
● 2026-05-16 13:58:04
○ 2026-06-12 23:28:56
○ 2026-07-30 21:11:04

○NSns3.parklogic.com2026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

●NSyichun.ns.cloudflare.com2026-06-12 → 2026-07-30 · 3 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
● 2026-07-30 21:11:04

○MXmail.h-email.net2015-05-16 → 2015-10-20 · 5 obs

○ 2008-03-15 09:55:34
● 2015-05-16 06:48:46
● 2015-10-20 15:20:00
○ 2015-12-25 12:34:06
○ 2026-07-30 21:11:04

○MXmx156.hostedmxserver.com2020-01-23 → 2026-03-08 · 5 obs

○ 2015-12-25 12:34:06
● 2020-01-23 13:04:14
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

●A104.21.35.2152026-07-30 → 2026-07-30 · 3 obs

○ 2026-06-12 23:28:56
● 2026-07-30 21:11:02
● 2026-07-30 21:11:04

○A13.248.213.452026-05-12 → 2026-05-16 · 5 obs

○ 2026-03-08 03:45:56
● 2026-05-12 20:04:46
● 2026-05-16 13:58:04
○ 2026-06-12 23:28:56
○ 2026-07-30 21:11:04

○A172.233.219.1232026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○A172.233.219.492026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○A172.233.219.782026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○A172.237.146.252026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○A172.237.146.382026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

○A172.237.146.82026-02-18 → 2026-03-08 · 5 obs

○ 2020-01-23 13:04:14
● 2026-02-18 08:02:00
● 2026-03-08 03:45:56
○ 2026-05-12 20:04:46
○ 2026-07-30 21:11:04

●A172.67.179.2302026-07-30 → 2026-07-30 · 3 obs

○ 2026-06-12 23:28:56
● 2026-07-30 21:11:02
● 2026-07-30 21:11:04

○A185.53.177.72015-05-16 → 2016-04-19 · 5 obs

○ 2008-03-15 09:55:34
● 2015-05-16 06:48:46
● 2016-04-19 17:34:28
○ 2017-02-02 15:06:20
○ 2026-07-30 21:11:04

○A185.53.178.72017-02-02 → 2017-02-02 · 4 obs

○ 2016-04-19 17:34:28
● 2017-02-02 15:06:20
○ 2020-01-23 13:04:14
○ 2026-07-30 21:11:04

○A188.114.96.02026-06-12 → 2026-06-12 · 4 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
○ 2026-07-30 21:11:02
○ 2026-07-30 21:11:04

○A188.114.97.02026-06-12 → 2026-06-12 · 4 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
○ 2026-07-30 21:11:02
○ 2026-07-30 21:11:04

●A2606:4700:3032::6815:23d72026-07-30 → 2026-07-30 · 3 obs

○ 2026-06-12 23:28:56
● 2026-07-30 21:11:02
● 2026-07-30 21:11:04

●A2606:4700:3036::ac43:b3e62026-07-30 → 2026-07-30 · 3 obs

○ 2026-06-12 23:28:56
● 2026-07-30 21:11:02
● 2026-07-30 21:11:04

○A2a06:98c1:3120::2026-06-12 → 2026-06-12 · 4 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
○ 2026-07-30 21:11:02
○ 2026-07-30 21:11:04

○A2a06:98c1:3121::2026-06-12 → 2026-06-12 · 4 obs

○ 2026-05-16 13:58:04
● 2026-06-12 23:28:56
○ 2026-07-30 21:11:02
○ 2026-07-30 21:11:04

○A66.96.232.1252008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 09:55:34
○ 2015-05-16 06:48:46
○ 2026-07-30 21:11:04

○A67.227.226.2402020-01-23 → 2020-01-23 · 4 obs

○ 2017-02-02 15:06:20
● 2020-01-23 13:04:14
○ 2026-02-18 08:02:00
○ 2026-07-30 21:11:04

○A76.223.67.1892026-05-12 → 2026-05-16 · 5 obs

○ 2026-03-08 03:45:56
● 2026-05-12 20:04:46
● 2026-05-16 13:58:04
○ 2026-06-12 23:28:56
○ 2026-07-30 21:11:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
mathkb.com	adrian.ns.cloudflare.com, yichun.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.248

NS records: adrian.ns.cloudflare.com, yichun.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathkb.com (unsigned zone)

⏱️ Timing

Total: 167ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.179.230, 104.21.35.215`
AAAA	2	`2606:4700:3036::ac43:b3e6, 2606:4700:3032::6815:23d7`
NS	2	`adrian.ns.cloudflare.com, yichun.ns.cloudflare.com`
TXT	1	`google-site-verification=xfOelPPupM_mQ3q`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`adrian.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (adrian.ns.cloudflare.com, adrian.ns.cloudflare.com, adrian.ns.cloudflare.com...)

Analysis

IP Addresses

mathkb.com has four IP addresses: 104.21.35.215, 172.67.179.230, 2606:4700:3032::6815:23d7 and 2606:4700:3036::ac43:b3e6.

kiemtienngay.com, healthsales.org, durableschrade.com and two other host names share IP numbers with mathkb.com.

Name Servers

mathkb.com is served by two delegated name servers, adrian.ns.cloudflare.com and yichun.ns.cloudflare.com.

mathkb.com uses the same name servers as several other domains — among them blameomar.com, digitalup.gr, brandl.ro and two more.

mathkb.com shares at least some of its name servers with other domains, including hgsgroup.co.il, caricami.it, cointraders.io and two others.

These name servers are frequently paired with the name servers tim.ns.cloudflare.com and thomas.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

adrian.ns.cloudflare.com carries IP addresses 108.162.192.57, 172.64.32.57 and 173.245.58.57, with 3 other addresses beyond those.

yichun.ns.cloudflare.com carries IP addresses 108.162.193.248, 172.64.33.248 and 173.245.59.248, with 3 other addresses beyond those.