`ivfcalc.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:b338^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:53a7^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.83.167^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.179.56^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`mckenzie.ns.cloudflare.com`
		A	2606:4700:50::a29f:26fd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mckenzie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2fd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mckenzie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22fd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mckenzie.ns.cloudflare.com`
		A	108.162.194.253^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mckenzie.ns.cloudflare.com`
		A	162.159.38.253^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mckenzie.ns.cloudflare.com`
		A	172.64.34.253^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mckenzie.ns.cloudflare.com`
TXT	`google-site-verification=MJH82Angt3oBgeXXpHjqKaGvcdlVPlDE04kBevYfYU8`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.83.167, 172.67.179.56
		IPv6 hints	2606:4700:3033::ac43:b338, 2606:4700:3037::6815:53a7
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=130, name=cloudflare-ech.com
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2410046182

`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=1784942657

Same first word

ivfcalc.com

Similar names

cvfacil.com

cvfacil.es

DNS History

15 records (6 active, 9 former)

●NSduke.ns.cloudflare.com2026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

●NSmckenzie.ns.cloudflare.com2026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

○NSns1.dnspai.com2018-08-04 → 2018-08-04 · 4 obs

○ 2017-01-13 21:30:42
● 2018-08-04 14:11:28
○ 2026-07-01 06:29:02
○ 2026-07-25 01:35:06

○NSns1.domaindiscover.com2015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

○NSns2.dnspai.com2018-08-04 → 2018-08-04 · 4 obs

○ 2017-01-13 21:30:42
● 2018-08-04 14:11:28
○ 2026-07-01 06:29:02
○ 2026-07-25 01:35:06

○NSns2.domaindiscover.com2015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

○MXmx1.daemonmail.net2015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

○MXmx2.daemonmail.net2015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

●A104.21.83.1672026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

●A172.67.179.562026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

○A216.104.165.202015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

○A216.104.165.802015-06-13 → 2017-01-13 · 4 obs

● 2015-06-13 15:21:20
● 2017-01-13 21:30:42
○ 2018-08-04 14:11:28
○ 2026-07-25 01:35:06

○A23.89.102.232018-08-04 → 2018-08-04 · 4 obs

○ 2017-01-13 21:30:42
● 2018-08-04 14:11:28
○ 2026-07-01 06:29:02
○ 2026-07-25 01:35:06

●A2606:4700:3033::ac43:b3382026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

●A2606:4700:3037::6815:53a72026-07-01 → 2026-07-25 · 3 obs

○ 2018-08-04 14:11:28
● 2026-07-01 06:29:02
● 2026-07-25 01:35:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net...	-
ivfcalc.com	duke.ns.cloudflare.com, mckenzie.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.253

NS records: duke.ns.cloudflare.com, mckenzie.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 437ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.179.56, 104.21.83.167`
AAAA	2	`2606:4700:3037::6815:53a7, 2606:4700:3033::ac43:b338`
NS	2	`duke.ns.cloudflare.com, mckenzie.ns.cloudflare.com`
TXT	1	`google-site-verification=MJH82Angt3oBgeX`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

ivfcalc.com resolves to four IP addresses: 104.21.83.167, 172.67.179.56, 2606:4700:3033::ac43:b338 and 2606:4700:3037::6815:53a7.

Additional host names — assessments-human-insight.com, devils-dragons.at, mail.sahassoftech.com and two others — share IP numbers with ivfcalc.com.

Name Servers

The NS records for ivfcalc.com delegate to duke.ns.cloudflare.com and mckenzie.ns.cloudflare.com.

ivfcalc.com shares its name server setup with other domains, including estudiocontablegs.com.ar, victoriaconcept.it, latorc.workers.dev and two others.

ivfcalc.com has at least partial name server overlap with other domains, such as starforge.cloud, biquid.io, gegen.com.tw and two others.

It is common to see these name servers used together with name servers martha.ns.cloudflare.com and chris.ns.cloudflare.com.

Host names with 6 IP numbers:

duke.ns.cloudflare.com maps to 108.162.193.110, 172.64.33.110, 173.245.59.110 and 3 additional IP addresses.

mckenzie.ns.cloudflare.com maps to 108.162.194.253, 162.159.38.253, 172.64.34.253 and 3 additional IP addresses.

ivfcalc.com - robtex.com

ivfcalc.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`ivfcalc.com`

`com`