🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`topstdlibrary.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:146c^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:c05a^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.20.108^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.192.90^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alberto.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c12^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c312^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alberto.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2312^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alberto.ns.cloudflare.com`
		A	108.162.195.18^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	162.159.44.18^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
		A	172.64.35.18^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alberto.ns.cloudflare.com`
NS	`coco.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a68^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coco.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c068^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`coco.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2068^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`coco.ns.cloudflare.com`
		A	108.162.192.104^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coco.ns.cloudflare.com`
		A	172.64.32.104^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coco.ns.cloudflare.com`
		A	173.245.58.104^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coco.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.108, 172.67.192.90
		IPv6 hints	2606:4700:3034::6815:146c, 2606:4700:3035::ac43:c05a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=94, name=cloudflare-ech.com
SOA	`alberto.ns.cloudflare.com`dns@cloudflare.com serial=2412557134

`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=1787496871

Same first word

topstdlibrary.com

Previous names

Next names

DNS History

11 records (6 active, 5 former)

●NSalberto.ns.cloudflare.com2026-06-10 → 2026-08-23 · 2 obs

● 2026-06-10 17:08:36
● 2026-08-23 14:59:30

●NScoco.ns.cloudflare.com2026-06-10 → 2026-08-23 · 2 obs

● 2026-06-10 17:08:36
● 2026-08-23 14:59:30

●A104.21.20.1082026-06-10 → 2026-08-23 · 7 obs

● 2026-06-10 17:08:36
● 2026-06-11 12:31:22
○ 2026-07-01 12:31:24
● 2026-07-27 21:56:32
○ 2026-08-03 11:24:18
● 2026-08-23 14:59:26
● 2026-08-23 14:59:30

●A172.67.192.902026-06-10 → 2026-08-23 · 7 obs

● 2026-06-10 17:08:36
● 2026-06-11 12:31:22
○ 2026-07-01 12:31:24
● 2026-07-27 21:56:32
○ 2026-08-03 11:24:18
● 2026-08-23 14:59:26
● 2026-08-23 14:59:30

○A188.114.96.02026-07-01 → 2026-08-03 · 6 obs

○ 2026-06-11 12:31:22
● 2026-07-01 12:31:24
○ 2026-07-27 21:56:32
● 2026-08-03 11:24:18
○ 2026-08-23 14:59:26
○ 2026-08-23 14:59:30

○A188.114.97.02026-07-01 → 2026-08-03 · 6 obs

○ 2026-06-11 12:31:22
● 2026-07-01 12:31:24
○ 2026-07-27 21:56:32
● 2026-08-03 11:24:18
○ 2026-08-23 14:59:26
○ 2026-08-23 14:59:30

○A2606:4700:3032::ac43:c05a2026-06-10 → 2026-06-11 · 4 obs

● 2026-06-10 17:08:36
● 2026-06-11 12:31:22
○ 2026-07-01 12:31:24
○ 2026-08-23 14:59:30

●A2606:4700:3034::6815:146c2026-06-10 → 2026-08-23 · 7 obs

● 2026-06-10 17:08:36
● 2026-06-11 12:31:22
○ 2026-07-01 12:31:24
● 2026-07-27 21:56:32
○ 2026-08-03 11:24:18
● 2026-08-23 14:59:26
● 2026-08-23 14:59:30

●A2606:4700:3035::ac43:c05a2026-07-27 → 2026-08-23 · 5 obs

○ 2026-07-01 12:31:24
● 2026-07-27 21:56:32
○ 2026-08-03 11:24:18
● 2026-08-23 14:59:26
● 2026-08-23 14:59:30

○A2a06:98c1:3120::2026-07-01 → 2026-08-03 · 6 obs

○ 2026-06-11 12:31:22
● 2026-07-01 12:31:24
○ 2026-07-27 21:56:32
● 2026-08-03 11:24:18
○ 2026-08-23 14:59:26
○ 2026-08-23 14:59:30

○A2a06:98c1:3121::2026-07-01 → 2026-08-03 · 6 obs

○ 2026-06-11 12:31:22
● 2026-07-01 12:31:24
○ 2026-07-27 21:56:32
● 2026-08-03 11:24:18
○ 2026-08-23 14:59:26
○ 2026-08-23 14:59:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net...	-
topstdlibrary.com	coco.ns.cloudflare.com, alberto.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.104

NS records: coco.ns.cloudflare.com, alberto.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for topstdlibrary.com (unsigned zone)

⏱️ Timing

Total: 603ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.20.108, 172.67.192.90`
AAAA	2	`2606:4700:3035::ac43:c05a, 2606:4700:3034::6815:146c`
NS	2	`alberto.ns.cloudflare.com, coco.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alberto.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

topstdlibrary.com points to the four IP addresses 104.21.20.108, 172.67.192.90, 2606:4700:3034::6815:146c and 2606:4700:3035::ac43:c05a.

Among the host names that share IP numbers with topstdlibrary.com are ask.askcdp.com, dawnofluxury.com, realagroup.com and two others.

Name Servers

topstdlibrary.com is delegated to two name servers: alberto.ns.cloudflare.com and coco.ns.cloudflare.com.

topstdlibrary.com has the same name server delegation as a number of other domains, such as buystandardspdf.com, aimine.art, danelor.com and two more.

The name servers of topstdlibrary.com overlap at least partially with those of other domains — among them cdizhangchbsaizhib.com.cn, rongyayingyshangdianxiazai.com.cn, lanqupankouzainakan.com.cn and two more.

The name servers malavika.ns.cloudflare.com, nelly.ns.cloudflare.com and vin.ns.cloudflare.com are commonly seen alongside these name servers.

Host names resolving to 6 IP numbers:

alberto.ns.cloudflare.com resolves to 108.162.195.18, 162.159.44.18, 172.64.35.18 and 3 other IP addresses.

coco.ns.cloudflare.com resolves to 108.162.192.104, 172.64.32.104, 173.245.58.104 and 3 other IP addresses.

topstdlibrary.com - robtex.com