leetcode.com - dns.ninja

`leetcode.com`

DNSSEC	⚠️ Not signed
A	2606:4700:10::6814:294f^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:10::ac42:9aa0^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.20.41.79^{Cloudflare104.20.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.66.154.160^{🇺🇸 Cloudflare172.66.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`melinda.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ac6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0c6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melinda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20c6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melinda.ns.cloudflare.com`
		A	108.162.192.198^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	172.64.32.198^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	173.245.58.198^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
NS	`rob.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rob.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rob.ns.cloudflare.com`
		A	108.162.193.140^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	172.64.33.140^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	173.245.59.140^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f27.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`anthropic-domain-verification-eym4e4=lH3v8Fwoae08kGLzRZQ9PW76l`
TXT	`domain-verification=6265d606aef4f770bf52dccbf18644e645dcada2b1ec0ce5a6061fb49...`
TXT	`google-site-verification=ds0HPGUEYOzxPbBHmhQUrjDGv2-jKNpAOYcYK0dhSlw`
TXT	`google-site-verification=uPA2Afaqn3DS4X4oaTesCU4ucbWXEdQXhdtyre0mdmg`
TXT	`v=spf1 include:amazonses.com include:_spf.google.com include:mail.zendesk.com...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.20.41.79, 172.66.154.160
		IPv6 hints	2606:4700:10::6814:294f, 2606:4700:10::ac42:9aa0
SOA	`melinda.ns.cloudflare.com`dns@cloudflare.com serial=2406817632

`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=1781436615

rank #3127 globally
rank #1636 in the tld
WOT: SAFE (79/100)
📈 Tranco rank: #4,472

Subdomains

articles.leetcode.com

www.leetcode.com

discuss.leetcode.com

collaboration-ws.leetcode.com

assets.leetcode.com

autocomplete.leetcode.com

f9yiinydtz.leetcode.com

Same first word

leetcode.cn

leetcode.in

leetcode.ca

leetcode.io

leetcode.net

leetcode.uz

leetcode.pro

leetcode.com

leetcode.wang

leetcode.codes

leetcode.co

leetcode.jp

Similar names

DNS History

37 records (11 active, 26 former)

●NSmelinda.ns.cloudflare.com2017-09-26 → 2026-06-14 · 3 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
● 2026-06-14 11:36:22

○NSns55.domaincontrol.com2015-07-03 → 2015-07-03 · 3 obs

● 2015-07-03 04:22:48
○ 2015-09-19 15:26:14
○ 2026-06-14 11:36:22

○NSns56.domaincontrol.com2015-07-03 → 2015-07-03 · 3 obs

● 2015-07-03 04:22:48
○ 2015-09-19 15:26:14
○ 2026-06-14 11:36:22

○NSns75.domaincontrol.com2015-09-19 → 2017-02-12 · 5 obs

○ 2015-07-03 04:22:48
● 2015-09-19 15:26:14
● 2017-02-12 02:19:16
○ 2017-09-26 14:53:42
○ 2026-06-14 11:36:22

○NSns76.domaincontrol.com2015-09-19 → 2017-02-12 · 5 obs

○ 2015-07-03 04:22:48
● 2015-09-19 15:26:14
● 2017-02-12 02:19:16
○ 2017-09-26 14:53:42
○ 2026-06-14 11:36:22

●NSrob.ns.cloudflare.com2017-09-26 → 2026-06-14 · 3 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
● 2026-06-14 11:36:22

●MXalt1.aspmx.l.google.com2017-01-03 → 2026-06-14 · 3 obs

○ 2016-02-03 14:58:24
● 2017-01-03 00:30:56
● 2026-06-14 11:36:22

●MXalt2.aspmx.l.google.com2017-01-03 → 2026-06-14 · 3 obs

○ 2016-02-03 14:58:24
● 2017-01-03 00:30:56
● 2026-06-14 11:36:22

●MXalt3.aspmx.l.google.com2017-01-03 → 2026-06-14 · 3 obs

○ 2016-02-03 14:58:24
● 2017-01-03 00:30:56
● 2026-06-14 11:36:22

●MXalt4.aspmx.l.google.com2017-01-03 → 2026-06-14 · 3 obs

○ 2016-02-03 14:58:24
● 2017-01-03 00:30:56
● 2026-06-14 11:36:22

●MXaspmx.l.google.com2017-01-03 → 2026-06-14 · 3 obs

○ 2016-02-03 14:58:24
● 2017-01-03 00:30:56
● 2026-06-14 11:36:22

○MXmailstore1.secureserver.net2015-07-03 → 2016-02-03 · 4 obs

● 2015-07-03 04:22:48
● 2016-02-03 14:58:24
○ 2017-01-03 00:30:56
○ 2026-06-14 11:36:22

○MXsmtp.secureserver.net2015-07-03 → 2016-02-03 · 4 obs

● 2015-07-03 04:22:48
● 2016-02-03 14:58:24
○ 2017-01-03 00:30:56
○ 2026-06-14 11:36:22

○A104.18.34.282020-03-23 → 2020-08-10 · 5 obs

○ 2017-09-26 14:53:42
● 2020-03-23 05:02:34
● 2020-08-10 08:12:22
○ 2021-04-02 18:22:34
○ 2026-06-14 11:36:22

○A104.18.35.282020-03-23 → 2020-08-10 · 5 obs

○ 2017-09-26 14:53:42
● 2020-03-23 05:02:34
● 2020-08-10 08:12:22
○ 2021-04-02 18:22:34
○ 2026-06-14 11:36:22

●A104.20.41.792026-02-15 → 2026-06-14 · 3 obs

○ 2021-11-05 04:12:48
● 2026-02-15 05:51:46
● 2026-06-14 11:36:22

○A104.21.38.2052021-04-02 → 2021-04-02 · 4 obs

○ 2020-08-10 08:12:22
● 2021-04-02 18:22:34
○ 2021-11-05 04:12:48
○ 2026-06-14 11:36:22

○A104.26.8.1012021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A104.26.9.1012021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A104.27.160.902017-09-26 → 2017-09-26 · 4 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
○ 2020-03-23 05:02:34
○ 2026-06-14 11:36:22

○A104.27.161.902017-09-26 → 2017-09-26 · 4 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
○ 2020-03-23 05:02:34
○ 2026-06-14 11:36:22

●A172.66.154.1602026-02-15 → 2026-06-14 · 3 obs

○ 2021-11-05 04:12:48
● 2026-02-15 05:51:46
● 2026-06-14 11:36:22

○A172.67.138.832020-06-26 → 2021-04-02 · 5 obs

○ 2020-03-23 05:02:34
● 2020-06-26 10:10:52
● 2021-04-02 18:22:34
○ 2021-11-05 04:12:48
○ 2026-06-14 11:36:22

○A172.67.72.2132021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A173.230.148.1032015-07-03 → 2015-09-19 · 4 obs

● 2015-07-03 04:22:48
● 2015-09-19 15:26:14
○ 2015-11-05 17:27:34
○ 2026-06-14 11:36:22

○A2400:cb00:2048:1::681b:a05a2017-09-26 → 2017-09-26 · 4 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
○ 2020-03-23 05:02:34
○ 2026-06-14 11:36:22

○A2400:cb00:2048:1::681b:a15a2017-09-26 → 2017-09-26 · 4 obs

○ 2017-02-12 02:19:16
● 2017-09-26 14:53:42
○ 2020-03-23 05:02:34
○ 2026-06-14 11:36:22

●A2606:4700:10::6814:294f2026-02-15 → 2026-06-14 · 3 obs

○ 2021-11-05 04:12:48
● 2026-02-15 05:51:46
● 2026-06-14 11:36:22

●A2606:4700:10::ac42:9aa02026-02-15 → 2026-06-14 · 3 obs

○ 2021-11-05 04:12:48
● 2026-02-15 05:51:46
● 2026-06-14 11:36:22

○A2606:4700:20::681a:8652021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A2606:4700:20::681a:9652021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A2606:4700:20::ac43:48d52021-11-05 → 2021-11-05 · 4 obs

○ 2021-04-02 18:22:34
● 2021-11-05 04:12:48
○ 2026-02-15 05:51:46
○ 2026-06-14 11:36:22

○A2606:4700:3030::6812:221c2020-03-23 → 2020-08-10 · 5 obs

○ 2017-09-26 14:53:42
● 2020-03-23 05:02:34
● 2020-08-10 08:12:22
○ 2021-04-02 18:22:34
○ 2026-06-14 11:36:22

○A2606:4700:3030::ac43:8a532020-06-26 → 2021-04-02 · 5 obs

○ 2020-03-23 05:02:34
● 2020-06-26 10:10:52
● 2021-04-02 18:22:34
○ 2021-11-05 04:12:48
○ 2026-06-14 11:36:22

○A2606:4700:3033::6815:26cd2021-04-02 → 2021-04-02 · 4 obs

○ 2020-08-10 08:12:22
● 2021-04-02 18:22:34
○ 2021-11-05 04:12:48
○ 2026-06-14 11:36:22

○A2606:4700:3037::6812:231c2020-03-23 → 2020-08-10 · 5 obs

○ 2017-09-26 14:53:42
● 2020-03-23 05:02:34
● 2020-08-10 08:12:22
○ 2021-04-02 18:22:34
○ 2026-06-14 11:36:22

○A74.82.5.1682015-11-05 → 2017-02-12 · 5 obs

○ 2015-09-19 15:26:14
● 2015-11-05 17:27:34
● 2017-02-12 02:19:16
○ 2017-09-26 14:53:42
○ 2026-06-14 11:36:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
leetcode.com	rob.ns.cloudflare.com, melinda.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.198

NS records: rob.ns.cloudflare.com, melinda.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 673ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.66.154.160, 104.20.41.79`
AAAA	2	`2606:4700:10::6814:294f, 2606:4700:10::ac42:9aa0`
NS	2	`melinda.ns.cloudflare.com, rob.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	5	`anthropic-domain-verification-eym4e4=lH3, domain-verification=6265d606aef4f770bf52...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`melinda.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The host names articles.leetcode.com, www.leetcode.com, discuss.leetcode.com, collaboration-ws.leetcode.com and assets.leetcode.com — among a few others — fall under the parent domain leetcode.com.

IP Addresses

leetcode.com directs to four IP numbers, which are 104.20.41.79, 172.66.154.160, 2606:4700:10::6814:294f and 2606:4700:10::ac42:9aa0.

Two other host names, along with articles.leetcode.com, www.leetcode.com and discuss.leetcode.com, also share IP numbers with leetcode.com.

Name Servers

leetcode.com uses two name servers for its delegation: melinda.ns.cloudflare.com and rob.ns.cloudflare.com.

leetcode.com shares its NS records with other domains, for example akvantis.com.ua, tgnn.live, roommateshub.co and two others.

At least some of leetcode.com's name servers are shared with other domains, for example fragrance.com.hk, hudsonred.com, rmxniagara.com and two more.

These name servers tend to be used in conjunction with the name servers lady.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname melinda.ns.cloudflare.com directs to 108.162.192.198, 172.64.32.198 and 173.245.58.198 along with 3 other IP addresses.

Hostname rob.ns.cloudflare.com directs to 108.162.193.140, 172.64.33.140 and 173.245.59.140 along with 3 other IP addresses.

Mail Servers

Five mail servers handle leetcode.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between leetcode.com and other domains, including birkrealtors.com, charlenerichardrsw.com, ns500759.ns500698.ns500759.ns500698.ns500736.ns500736.ns500698.ns500735.ns500736.ns500708.ns500698.ns500686.ns500576.ns500576.trackreceptor.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com directs traffic to 192.178.155.26 and 2607:f8b0:4004:c1b::1b.

alt1.aspmx.l.google.com directs traffic to 108.177.123.26 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com directs traffic to 172.253.116.27 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com directs traffic to 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com directs traffic to 172.253.157.27 and 2a00:1450:400c:c23::1a.