learntocalibrate.com - robtex.com

learntocalibrate.com

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:504b🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:afe3🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.80.75Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.175.227🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSharlan.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2cfa🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlan.ns.cloudflare.com
A2803:f800:50::6ca2:c3fa🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRharlan.ns.cloudflare.com
A2a06:98c1:50::ac40:23fa🇺🇸 Cloudflare2a06:98c1:50::/45
PTRharlan.ns.cloudflare.com
A108.162.195.250🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlan.ns.cloudflare.com
A162.159.44.250Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlan.ns.cloudflare.com
A172.64.35.250🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharlan.ns.cloudflare.com
NSnena.ns.cloudflare.com
A2606:4700:50::a29f:26a1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnena.ns.cloudflare.com
A2803:f800:50::6ca2:c2a1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnena.ns.cloudflare.com
A2a06:98c1:50::ac40:22a1🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnena.ns.cloudflare.com
A108.162.194.161🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnena.ns.cloudflare.com
A162.159.38.161Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnena.ns.cloudflare.com
A172.64.34.161🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnena.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.80.75, 172.67.175.227
IPv6 hints2606:4700:3032::6815:504b, 2606:4700:3035::ac43:afe3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=220, name=cloudflare-ech.com
SOAharlan.ns.cloudflare.comdns@cloudflare.com serial=2404244205

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778804561

Same first word

learntocalibrate.com

DNS History

14 records (6 active, 8 former)

20162017201820192020202120222023202420252026NSharlan.ns.cloudflare.comnena.ns.cloudflare.comns1.learntocalibrate.comns1.taoa.comns2.learntocalibrate.comns2.taoa.comred.gre.keyMXmail.learntocalibrate.comA104.21.80.75172.67.175.2272606:4700:3032::6815:504b2606:4700:3035::ac43:afe3104.238.73.15738.173.159.209
●NSharlan.ns.cloudflare.com2026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
●NSnena.ns.cloudflare.com2026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
○NSns1.learntocalibrate.com2015-07-16 → 2017-01-03 · 4 obs
● 2015-07-16 08:10:12
● 2017-01-03 05:25:46
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
○NSns1.taoa.com2026-04-06 → 2026-05-15 · 2 obs
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
○NSns2.learntocalibrate.com2015-07-16 → 2017-01-03 · 4 obs
● 2015-07-16 08:10:12
● 2017-01-03 05:25:46
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
○NSns2.taoa.com2026-04-06 → 2026-05-15 · 2 obs
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
○NSred.gre.key2015-07-16 → 2017-01-03 · 4 obs
● 2015-07-16 08:10:12
● 2017-01-03 05:25:46
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
○MXmail.learntocalibrate.com2015-07-16 → 2017-01-03 · 4 obs
● 2015-07-16 08:10:12
● 2017-01-03 05:25:46
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
●A104.21.80.752026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
○A104.238.73.1572015-07-16 → 2017-01-03 · 4 obs
● 2015-07-16 08:10:12
● 2017-01-03 05:25:46
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24
●A172.67.175.2272026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
●A2606:4700:3032::6815:504b2026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
●A2606:4700:3035::ac43:afe32026-04-06 → 2026-05-15 · 3 obs
○ 2017-01-03 05:25:46
● 2026-04-06 07:19:34
● 2026-05-15 00:41:24
○A38.173.159.2092026-04-06 → 2026-05-15 · 2 obs
○ 2026-04-06 07:19:34
○ 2026-05-15 00:41:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comb.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net, f.gtld-servers.net...-
learntocalibrate.comnena.ns.cloudflare.com, harlan.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.250

NS records: nena.ns.cloudflare.com, harlan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learntocalibrate.com (unsigned zone)

⏱️ Timing

Total: 429ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.80.75, 172.67.175.227
AAAA22606:4700:3035::ac43:afe3, 2606:4700:3032::6815:504b
NS2harlan.ns.cloudflare.com, nena.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1harlan.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

learntocalibrate.com points to four IP numbers: 2606:4700:3032::6815:504b, 2606:4700:3035::ac43:afe3, 104.21.80.75 and 172.67.175.227.

Other host names, for instance www.canadagoosepaschere.fr, saudagarhartanah.com, www.idleengineers.com, sipav.org and lindsay-sherwin.co.uk share IP numbers with learntocalibrate.com.

Name Servers

learntocalibrate.com is delegated to two name servers: harlan.ns.cloudflare.com and nena.ns.cloudflare.com.

learntocalibrate.com uses the same name server setup as other domains, for instance teweixiang.com, changchun-anmo.com, cabva.com, mindenriverrun.com and chlaexpo.com.

learntocalibrate.com shares name servers with other domains at least partially, for instance e3fab.com, quebexico.com, poufou.com, bj-bhyy.com and girisimalacak.com.

Host names with six IP numbers: harlan.ns.cloudflare.com points to 2606:4700:58::a29f:2cfa, 2803:f800:50::6ca2:c3fa, 2a06:98c1:50::ac40:23fa, 108.162.195.250, 162.159.44.250 and 172.64.35.250; nena.ns.cloudflare.com points to 2606:4700:50::a29f:26a1, 2803:f800:50::6ca2:c2a1, 2a06:98c1:50::ac40:22a1, 108.162.194.161, 162.159.38.161 and 172.64.34.161.