`prescriptive.biz`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:1095^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:d5a1^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.16.149^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.161^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`khalid.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c35^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khalid.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c335^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`khalid.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2335^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`khalid.ns.cloudflare.com`
		A	108.162.195.53^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khalid.ns.cloudflare.com`
		A	162.159.44.53^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khalid.ns.cloudflare.com`
		A	172.64.35.53^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`khalid.ns.cloudflare.com`
NS	`love.ns.cloudflare.com`
		A	2606:4700:50::a29f:2677^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`love.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c277^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`love.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2277^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`love.ns.cloudflare.com`
		A	108.162.194.119^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`love.ns.cloudflare.com`
		A	162.159.38.119^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`love.ns.cloudflare.com`
		A	172.64.34.119^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`love.ns.cloudflare.com`
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
TXT	`n9vblvtkm4qd01x4rgh2r7sgwxhkswh7`
TXT	`v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.16.149, 172.67.213.161
		IPv6	2606:4700:3031::6815:1095, 2606:4700:3037::ac43:d5a1
SOA	`khalid.ns.cloudflare.com`dns@cloudflare.com serial=2399118414

`biz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld.biz` ⭐
	NS	`b.gtld.biz`
	NS	`c.gtld.biz`
	NS	`m.gtld.biz`
	NS	`n.gtld.biz`
	NS	`w.gtld.biz`
	NS	`x.gtld.biz`
	NS	`y.gtld.biz`
	SOA	`a.gtld.biz`admin@tldns.godaddy serial=1774381496

Subdomains

lab.prescriptive.biz

Same first word

prescriptive.biz

DNS History

13 records (8 active, 5 former)

●NSkhalid.ns.cloudflare.com2026-02-16 → 2026-03-24 · 3 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-03-24 20:04:12

●NSlove.ns.cloudflare.com2026-02-16 → 2026-03-24 · 3 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-03-24 20:04:12

○NSns27.domaincontrol.com2020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 00:18:30
○ 2026-02-16 11:16:30
○ 2026-03-24 20:04:12

○NSns28.domaincontrol.com2020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 00:18:30
○ 2026-02-16 11:16:30
○ 2026-03-24 20:04:12

●MXus-smtp-inbound-1.mimecast.com2020-02-25 → 2026-03-24 · 2 obs

● 2020-02-25 00:18:30
● 2026-03-24 20:04:12

●MXus-smtp-inbound-2.mimecast.com2020-02-25 → 2026-03-24 · 2 obs

● 2020-02-25 00:18:30
● 2026-03-24 20:04:12

●A104.21.16.1492026-02-16 → 2026-03-24 · 5 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-02-19 16:55:56
○ 2026-03-15 12:26:16
● 2026-03-24 20:04:12

○A172.64.80.12026-03-15 → 2026-03-15 · 3 obs

○ 2026-02-19 16:55:56
● 2026-03-15 12:26:16
○ 2026-03-24 20:04:12

●A172.67.213.1612026-02-16 → 2026-03-24 · 5 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-02-19 16:55:56
○ 2026-03-15 12:26:16
● 2026-03-24 20:04:12

○A184.168.131.2412020-02-25 → 2020-02-25 · 3 obs

● 2020-02-25 00:18:30
○ 2026-02-16 11:16:30
○ 2026-03-24 20:04:12

○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-19 → 2026-02-19 · 4 obs

○ 2026-02-17 04:10:40
● 2026-02-19 16:55:56
○ 2026-03-15 12:26:16
○ 2026-03-24 20:04:12

●A2606:4700:3031::6815:10952026-02-16 → 2026-03-24 · 6 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-02-17 04:10:40
○ 2026-02-19 16:55:56
● 2026-03-15 12:26:16
● 2026-03-24 20:04:12

●A2606:4700:3037::ac43:d5a12026-02-16 → 2026-03-24 · 6 obs

○ 2020-02-25 00:18:30
● 2026-02-16 11:16:30
● 2026-02-17 04:10:40
○ 2026-02-19 16:55:56
● 2026-03-15 12:26:16
● 2026-03-24 20:04:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
biz	a.gtld.biz, b.gtld.biz, c.gtld.biz, m.gtld.biz...	-
prescriptive.biz	khalid.ns.cloudflare.com, love.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.53

NS records: khalid.ns.cloudflare.com, love.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prescriptive.biz (unsigned zone)

⏱️ Timing

Total: 571ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.16.149, 172.67.213.161`
AAAA	2	`2606:4700:3037::ac43:d5a1, 2606:4700:3031::6815:1095`
NS	2	`khalid.ns.cloudflare.com, love.ns.cloudflare.com`
MX	2	`us-smtp-inbound-1.mimecast.com (pri: 10), us-smtp-inbound-2.mimecast.com (pri: 10)`
TXT	2	`n9vblvtkm4qd01x4rgh2r7sgwxhkswh7, v=spf1 include:us._netblocks.mimecast.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`khalid.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

The parent of lab.prescriptive.biz is prescriptive.biz.

IP Addresses

prescriptive.biz maps to four IP numbers: 2606:4700:3031::6815:1095, 2606:4700:3037::ac43:d5a1, 104.21.16.149 and 172.67.213.161.

other host names include 03bbb.com.cn.cdn.cloudflare.net, www.fightyr.com, secdata.com.br, epikbahis343.com and outletpharmacyonline.sa; they share IP numbers with prescriptive.biz.

Name Servers

Two name servers khalid.ns.cloudflare.com and love.ns.cloudflare.com handle the delegation for prescriptive.biz.

prescriptive.biz shares the same name server setup as other domains, for instance casino-korona.ru, pdscanada.com, dkv0.com, mutoutou.workers.dev and capitalinstitute.org.

prescriptive.biz at least partially shares name servers with other domains, for instance 4444.wtf, drbotea.ro, webtizi.com, hxwsks.com and diseazepidea.com.

These name servers are commonly used with braden.ns.cloudflare.com, micah.ns.cloudflare.com, joan.ns.cloudflare.com, hattie.ns.cloudflare.com and addilyn.ns.cloudflare.com.

Six IP addresses per host:

khalid.ns.cloudflare.com points to 2606:4700:58::a29f:2c35, 2803:f800:50::6ca2:c335, 2a06:98c1:50::ac40:2335, 108.162.195.53, 162.159.44.53 and 172.64.35.53; love.ns.cloudflare.com points to 2606:4700:50::a29f:2677, 2803:f800:50::6ca2:c277, 2a06:98c1:50::ac40:2277, 108.162.194.119, 162.159.38.119 and 172.64.34.119

Mail Servers

prescriptive.biz is handled by two mail servers: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

prescriptive.biz uses the same mail server setup as other domains, for instance ldgusa.com, hknc.org, stancilcpa.com, acuitypricing.com and upperedge.com.

prescriptive.biz shares at least partially some mail servers with other domains, for instance iemnj.com, jcaelectronics.ca, navymutual.org, kineticoswfl.com and gametrailers.com.