letsrtfm.com - dns.ninja

letsrtfm.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:40d0🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:9bd6🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.64.208Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.155.214🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlee.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b81🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlee.ns.cloudflare.com
A2803:f800:50::6ca2:c181🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlee.ns.cloudflare.com
A2a06:98c1:50::ac40:2181🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlee.ns.cloudflare.com
A108.162.193.129🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlee.ns.cloudflare.com
A172.64.33.129🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlee.ns.cloudflare.com
A173.245.59.129🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlee.ns.cloudflare.com
NSmary.ns.cloudflare.com
A2606:4700:50::adf5:3a86🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmary.ns.cloudflare.com
A2803:f800:50::6ca2:c086🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmary.ns.cloudflare.com
A2a06:98c1:50::ac40:2086🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmary.ns.cloudflare.com
A108.162.192.134🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmary.ns.cloudflare.com
A172.64.32.134🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmary.ns.cloudflare.com
A173.245.58.134🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmary.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.64.208, 172.67.155.214
IPv6 hints2606:4700:3033::6815:40d0, 2606:4700:3034::ac43:9bd6
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=33, name=cloudflare-ech.com
SOAlee.ns.cloudflare.comdns@cloudflare.com serial=2411397452

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=1786553439

Subdomains

dc-1a1dd545.letsrtfm.com

Same first word

letsrtfm.com

DNS History

24 records (6 active, 18 former)

20162017201820192020202120222023202420252026NSlee.ns.cloudflare.commary.ns.cloudflare.comns-cloud-d1.googledomains.comns-cloud-d2.googledomains.comns-cloud-d3.googledomains.comns-cloud-d4.googledomains.comns-cloud-e1.googledomains.comns-cloud-e2.googledomains.comns-cloud-e3.googledomains.comns-cloud-e4.googledomains.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.64.208172.67.155.2142606:4700:3033::6815:40d02606:4700:3034::ac43:9bd6104.236.160.168192.241.213.172206.189.74.1332606:4700:3030::6815:40d02606:4700:3033::ac43:9bd6
●NSlee.ns.cloudflare.com2015-08-15 → 2026-08-12 · 6 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-08-12 17:02:08
●NSmary.ns.cloudflare.com2015-08-15 → 2026-08-12 · 6 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-08-12 17:02:08
○NSns-cloud-d1.googledomains.com2019-03-23 → 2019-03-23 · 4 obs
○ 2017-02-19 09:51:42
● 2019-03-23 10:37:32
○ 2026-02-22 00:28:26
○ 2026-08-12 17:02:08
○NSns-cloud-d2.googledomains.com2019-03-23 → 2019-03-23 · 4 obs
○ 2017-02-19 09:51:42
● 2019-03-23 10:37:32
○ 2026-02-22 00:28:26
○ 2026-08-12 17:02:08
○NSns-cloud-d3.googledomains.com2019-03-23 → 2019-03-23 · 4 obs
○ 2017-02-19 09:51:42
● 2019-03-23 10:37:32
○ 2026-02-22 00:28:26
○ 2026-08-12 17:02:08
○NSns-cloud-d4.googledomains.com2019-03-23 → 2019-03-23 · 4 obs
○ 2017-02-19 09:51:42
● 2019-03-23 10:37:32
○ 2026-02-22 00:28:26
○ 2026-08-12 17:02:08
○NSns-cloud-e1.googledomains.com2016-07-05 → 2016-07-05 · 4 obs
○ 2016-03-09 02:28:38
● 2016-07-05 03:57:36
○ 2017-02-19 09:51:42
○ 2026-08-12 17:02:08
○NSns-cloud-e2.googledomains.com2016-07-05 → 2016-07-05 · 4 obs
○ 2016-03-09 02:28:38
● 2016-07-05 03:57:36
○ 2017-02-19 09:51:42
○ 2026-08-12 17:02:08
○NSns-cloud-e3.googledomains.com2016-07-05 → 2016-07-05 · 4 obs
○ 2016-03-09 02:28:38
● 2016-07-05 03:57:36
○ 2017-02-19 09:51:42
○ 2026-08-12 17:02:08
○NSns-cloud-e4.googledomains.com2016-07-05 → 2016-07-05 · 4 obs
○ 2016-03-09 02:28:38
● 2016-07-05 03:57:36
○ 2017-02-19 09:51:42
○ 2026-08-12 17:02:08
○MXalt1.aspmx.l.google.com2015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
○MXalt2.aspmx.l.google.com2015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
○MXalt3.aspmx.l.google.com2015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
○MXalt4.aspmx.l.google.com2015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
○MXaspmx.l.google.com2015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
●A104.21.64.2082026-02-22 → 2026-08-12 · 3 obs
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-08-12 17:02:08
○A104.236.160.1682016-07-05 → 2016-07-05 · 4 obs
○ 2016-03-09 02:28:38
● 2016-07-05 03:57:36
○ 2017-02-19 09:51:42
○ 2026-08-12 17:02:08
●A172.67.155.2142026-02-22 → 2026-08-12 · 3 obs
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-08-12 17:02:08
○A192.241.213.1722015-08-15 → 2016-03-09 · 4 obs
● 2015-08-15 01:32:20
● 2016-03-09 02:28:38
○ 2016-07-05 03:57:36
○ 2026-08-12 17:02:08
○A206.189.74.1332019-03-23 → 2019-03-23 · 4 obs
○ 2017-02-19 09:51:42
● 2019-03-23 10:37:32
○ 2026-02-22 00:28:26
○ 2026-08-12 17:02:08
○A2606:4700:3030::6815:40d02026-02-22 → 2026-06-15 · 5 obs
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-06-15 09:24:10
○ 2026-07-08 17:30:28
○ 2026-08-12 17:02:08
●A2606:4700:3033::6815:40d02026-07-08 → 2026-08-12 · 3 obs
○ 2026-06-15 09:24:10
● 2026-07-08 17:30:28
● 2026-08-12 17:02:08
○A2606:4700:3033::ac43:9bd62026-02-22 → 2026-06-15 · 5 obs
○ 2019-03-23 10:37:32
● 2026-02-22 00:28:26
● 2026-06-15 09:24:10
○ 2026-07-08 17:30:28
○ 2026-08-12 17:02:08
●A2606:4700:3034::ac43:9bd62026-07-08 → 2026-08-12 · 3 obs
○ 2026-06-15 09:24:10
● 2026-07-08 17:30:28
● 2026-08-12 17:02:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comd.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net...-
letsrtfm.comlee.ns.cloudflare.com, mary.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.129

NS records: lee.ns.cloudflare.com, mary.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for letsrtfm.com (unsigned zone)

⏱️ Timing

Total: 193ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.64.208, 172.67.155.214
AAAA22606:4700:3033::6815:40d0, 2606:4700:3034::ac43:9bd6
NS2lee.ns.cloudflare.com, mary.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1lee.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

dc-1a1dd545.letsrtfm.com is a subdomain of letsrtfm.com.

IP Addresses

letsrtfm.com points to the four IP addresses 104.21.64.208, 172.67.155.214, 2606:4700:3033::6815:40d0 and 2606:4700:3034::ac43:9bd6.

spiritualposters.com, irexpol.pl, pasasteslntagyc.top and two other host names share IP numbers with letsrtfm.com.

Name Servers

letsrtfm.com is served by two delegated name servers, lee.ns.cloudflare.com and mary.ns.cloudflare.com.

letsrtfm.com uses the same name servers as several other domains — among them alexiaonline.com, qmobilityad.com, miil.co.il and two more.

The name servers of letsrtfm.com overlap at least partially with those of other domains — among them uttara-perfume.com, gamacasino933.com, xasjzh.com and two more.

These name servers commonly appear alongside the name servers galilea.ns.cloudflare.com and alexa.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

lee.ns.cloudflare.com carries IP addresses 108.162.193.129, 172.64.33.129 and 173.245.59.129, with 3 other addresses beyond those.

mary.ns.cloudflare.com carries IP addresses 108.162.192.134, 172.64.32.134 and 173.245.58.134, with 3 other addresses beyond those.