`mathslib.com`

DNSSEC	⚠️ Not signed
A	38.147.176.43^{🇺🇸 XNNET38.147.176.0/24 Proxy-registered route object}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`ns1.julydns.com`master@jmdns.com serial=1765938234

`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=1775430787

Same first word

mathslib.com

Similar names

mathlibs.org

smithlab.net

listbham.com

labsmith.com

DNS History

14 records (5 active, 9 former)

○NSns1.bdydns.cn2018-07-15 → 2018-07-15 · 4 obs

○ 2015-10-24 00:54:46
● 2018-07-15 21:16:48
○ 2026-03-28 12:26:06
○ 2026-04-05 23:26:40

●NSns1.judns.com2026-03-28 → 2026-04-05 · 3 obs

○ 2018-07-15 21:16:48
● 2026-03-28 12:26:06
● 2026-04-05 23:26:40

●NSns1.julydns.com2026-03-28 → 2026-04-05 · 3 obs

○ 2018-07-15 21:16:48
● 2026-03-28 12:26:06
● 2026-04-05 23:26:40

○NSns2.bdydns.cn2018-07-15 → 2018-07-15 · 4 obs

○ 2015-10-24 00:54:46
● 2018-07-15 21:16:48
○ 2026-03-28 12:26:06
○ 2026-04-05 23:26:40

●NSns2.judns.com2026-03-28 → 2026-04-05 · 3 obs

○ 2018-07-15 21:16:48
● 2026-03-28 12:26:06
● 2026-04-05 23:26:40

●NSns2.julydns.com2026-03-28 → 2026-04-05 · 3 obs

○ 2018-07-15 21:16:48
● 2026-03-28 12:26:06
● 2026-04-05 23:26:40

○NSns51.domaincontrol.com2015-04-16 → 2015-04-16 · 3 obs

● 2015-04-16 04:37:26
○ 2015-10-24 00:54:46
○ 2026-04-05 23:26:40

○NSns52.domaincontrol.com2015-04-16 → 2015-04-16 · 3 obs

● 2015-04-16 04:37:26
○ 2015-10-24 00:54:46
○ 2026-04-05 23:26:40

○MXmailstore1.secureserver.net2015-04-16 → 2015-04-16 · 3 obs

● 2015-04-16 04:37:26
○ 2015-10-24 00:54:46
○ 2026-04-05 23:26:40

○MXmx.ym.163.com2018-07-15 → 2018-07-15 · 4 obs

○ 2015-10-24 00:54:46
● 2018-07-15 21:16:48
○ 2026-03-28 12:26:06
○ 2026-04-05 23:26:40

○MXsmtp.secureserver.net2015-04-16 → 2015-04-16 · 3 obs

● 2015-04-16 04:37:26
○ 2015-10-24 00:54:46
○ 2026-04-05 23:26:40

○A123.207.59.1912018-07-15 → 2018-07-15 · 4 obs

○ 2015-10-24 00:54:46
● 2018-07-15 21:16:48
○ 2026-03-28 12:26:06
○ 2026-04-05 23:26:40

●A38.147.176.432026-03-28 → 2026-04-05 · 3 obs

○ 2018-07-15 21:16:48
● 2026-03-28 12:26:06
● 2026-04-05 23:26:40

○A50.63.202.592015-04-16 → 2015-04-16 · 3 obs

● 2015-04-16 04:37:26
○ 2015-10-24 00:54:46
○ 2026-04-05 23:26:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net...	-
mathslib.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

NS records: ns1.judns.com, ns2.judns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathslib.com (unsigned zone)

⏱️ Timing

Total: 1969ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`38.147.176.43`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

IP Addresses

mathslib.com points to a single IP number: 38.147.176.43.

Name Servers

mathslib.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

mathslib.com shares name servers with other domains at least partially, for instance usofun.com, lemonmz.cn, 5166166.com, kwbi.cn and smhsp.com.