algotester.com - dns.ninja

`algotester.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:5b2c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:d232^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.44^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.210.50^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`clay.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b58^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c158^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clay.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2158^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clay.ns.cloudflare.com`
		A	108.162.193.88^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	172.64.33.88^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	173.245.59.88^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
NS	`tess.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tess.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tess.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tess.ns.cloudflare.com`
		A	108.162.192.227^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tess.ns.cloudflare.com`
		A	172.64.32.227^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tess.ns.cloudflare.com`
		A	173.245.58.227^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tess.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.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	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.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	`v=DMARC1; p=none;`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.44, 172.67.210.50
		IPv6 hints	2606:4700:3033::6815:5b2c, 2606:4700:3034::ac43:d232
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com
SOA	`clay.ns.cloudflare.com`dns@cloudflare.com serial=2405779262

`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=1784072362

Subdomains

www.algotester.com

Same first word

algotester.com

Similar names

DNS History

31 records (11 active, 20 former)

●NSclay.ns.cloudflare.com2018-02-13 → 2026-07-14 · 3 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
● 2026-07-14 23:49:14

○NSns1.fastdns.hosting2015-07-26 → 2016-02-07 · 4 obs

● 2015-07-26 00:19:36
● 2016-02-07 01:15:30
○ 2016-04-27 14:28:40
○ 2026-07-14 23:49:14

○NSns115.inhostedns.com2016-04-27 → 2017-01-02 · 5 obs

○ 2016-02-07 01:15:30
● 2016-04-27 14:28:40
● 2017-01-02 07:25:38
○ 2018-02-13 14:50:28
○ 2026-07-14 23:49:14

○NSns2.fastdns.hosting2015-07-26 → 2016-02-07 · 4 obs

● 2015-07-26 00:19:36
● 2016-02-07 01:15:30
○ 2016-04-27 14:28:40
○ 2026-07-14 23:49:14

○NSns215.inhostedns.net2016-04-27 → 2017-01-02 · 5 obs

○ 2016-02-07 01:15:30
● 2016-04-27 14:28:40
● 2017-01-02 07:25:38
○ 2018-02-13 14:50:28
○ 2026-07-14 23:49:14

○NSns3.fastdns.hosting2015-07-26 → 2016-02-07 · 4 obs

● 2015-07-26 00:19:36
● 2016-02-07 01:15:30
○ 2016-04-27 14:28:40
○ 2026-07-14 23:49:14

○NSns315.inhostedns.org2016-04-27 → 2017-01-02 · 5 obs

○ 2016-02-07 01:15:30
● 2016-04-27 14:28:40
● 2017-01-02 07:25:38
○ 2018-02-13 14:50:28
○ 2026-07-14 23:49:14

●NStess.ns.cloudflare.com2018-02-13 → 2026-07-14 · 3 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
● 2026-07-14 23:49:14

●MXalt1.aspmx.l.google.com2015-07-26 → 2026-07-14 · 2 obs

● 2015-07-26 00:19:36
● 2026-07-14 23:49:14

●MXalt2.aspmx.l.google.com2015-07-26 → 2026-07-14 · 2 obs

● 2015-07-26 00:19:36
● 2026-07-14 23:49:14

●MXalt3.aspmx.l.google.com2026-02-14 → 2026-07-14 · 3 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-07-14 23:49:14

●MXalt4.aspmx.l.google.com2026-02-14 → 2026-07-14 · 3 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-07-14 23:49:14

●MXaspmx.l.google.com2015-07-26 → 2026-07-14 · 2 obs

● 2015-07-26 00:19:36
● 2026-07-14 23:49:14

○MXaspmx2.googlemail.com2015-07-26 → 2018-02-13 · 4 obs

● 2015-07-26 00:19:36
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

○MXaspmx3.googlemail.com2015-07-26 → 2018-02-13 · 4 obs

● 2015-07-26 00:19:36
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

●A104.21.91.442026-02-14 → 2026-07-14 · 6 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-04-14 16:36:18
○ 2026-04-28 06:12:34
● 2026-04-29 21:59:54
● 2026-07-14 23:49:14

○A104.27.178.592018-02-13 → 2018-02-13 · 4 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

○A104.27.179.592018-02-13 → 2018-02-13 · 4 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

●A172.67.210.502026-02-14 → 2026-07-14 · 6 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-04-14 16:36:18
○ 2026-04-28 06:12:34
● 2026-04-29 21:59:54
● 2026-07-14 23:49:14

○A188.114.96.02026-04-28 → 2026-04-28 · 4 obs

○ 2026-04-14 16:36:18
● 2026-04-28 06:12:34
○ 2026-04-29 21:59:54
○ 2026-07-14 23:49:14

○A188.114.97.02026-04-28 → 2026-04-28 · 4 obs

○ 2026-04-14 16:36:18
● 2026-04-28 06:12:34
○ 2026-04-29 21:59:54
○ 2026-07-14 23:49:14

○A194.44.247.722017-01-02 → 2017-01-02 · 4 obs

○ 2016-04-27 14:28:40
● 2017-01-02 07:25:38
○ 2018-02-13 14:50:28
○ 2026-07-14 23:49:14

○A2400:cb00:2048:1::681b:b23b2018-02-13 → 2018-02-13 · 4 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

○A2400:cb00:2048:1::681b:b33b2018-02-13 → 2018-02-13 · 4 obs

○ 2017-01-02 07:25:38
● 2018-02-13 14:50:28
○ 2026-02-14 20:23:10
○ 2026-07-14 23:49:14

○A2606:4700:3031::6815:5b2c2026-02-14 → 2026-04-29 · 7 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-04-14 16:36:18
○ 2026-04-28 06:12:34
● 2026-04-29 21:59:54
○ 2026-07-04 11:45:30
○ 2026-07-14 23:49:14

●A2606:4700:3033::6815:5b2c2026-07-04 → 2026-07-14 · 3 obs

○ 2026-04-29 21:59:54
● 2026-07-04 11:45:30
● 2026-07-14 23:49:14

●A2606:4700:3034::ac43:d2322026-07-04 → 2026-07-14 · 3 obs

○ 2026-04-29 21:59:54
● 2026-07-04 11:45:30
● 2026-07-14 23:49:14

○A2606:4700:3035::ac43:d2322026-02-14 → 2026-04-29 · 7 obs

○ 2018-02-13 14:50:28
● 2026-02-14 20:23:10
● 2026-04-14 16:36:18
○ 2026-04-28 06:12:34
● 2026-04-29 21:59:54
○ 2026-07-04 11:45:30
○ 2026-07-14 23:49:14

○A2a06:98c1:3120::2026-04-28 → 2026-04-28 · 4 obs

○ 2026-04-14 16:36:18
● 2026-04-28 06:12:34
○ 2026-04-29 21:59:54
○ 2026-07-14 23:49:14

○A2a06:98c1:3121::2026-04-28 → 2026-04-28 · 4 obs

○ 2026-04-14 16:36:18
● 2026-04-28 06:12:34
○ 2026-04-29 21:59:54
○ 2026-07-14 23:49:14

○A37.53.75.992015-07-26 → 2016-04-27 · 4 obs

● 2015-07-26 00:19:36
● 2016-04-27 14:28:40
○ 2017-01-02 07:25:38
○ 2026-07-14 23:49:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, c.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net...	-
algotester.com	clay.ns.cloudflare.com, tess.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.88

NS records: clay.ns.cloudflare.com, tess.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for algotester.com (unsigned zone)

⏱️ Timing

Total: 320ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.44, 172.67.210.50`
AAAA	2	`2606:4700:3033::6815:5b2c, 2606:4700:3034::ac43:d232`
NS	2	`clay.ns.cloudflare.com, tess.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`v=DMARC1; p=none;, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`clay.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

algotester.com serves as the parent of www.algotester.com.

IP Addresses

algotester.com resolves to four IP addresses: 104.21.91.44, 172.67.210.50, 2606:4700:3033::6815:5b2c and 2606:4700:3034::ac43:d232.

Two other host names, along with 440forums.com, danbit.dk and amgschool.org, also share IP numbers with algotester.com.

Name Servers

algotester.com is served by two delegated name servers, clay.ns.cloudflare.com and tess.ns.cloudflare.com.

algotester.com shares its NS records with other domains, for example trucksota.if.ua, zywakapiter.com, klink.xyz and two others.

algotester.com has at least partial name server overlap with other domains, such as 09n.com, mqqw.com, rossilandscapinginc.net and two others.

These name servers tend to appear together with the name servers ulla.ns.cloudflare.com, evangeline.ns.cloudflare.com and hayes.ns.cloudflare.com.

DNS names with 6 IP addresses:

clay.ns.cloudflare.com carries IP addresses 108.162.193.88, 172.64.33.88 and 173.245.59.88, with 3 other addresses beyond those.

tess.ns.cloudflare.com carries IP addresses 108.162.192.227, 172.64.32.227 and 173.245.58.227, with 3 other addresses beyond those.

Mail Servers

algotester.com is handled by five mail servers: 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 algotester.com and other domains, including semcouniversity.com, persistentsoftware.com, agrifarmeet.vn and two others.

These mail servers tend to appear in combination with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Host names that have two IP addresses:

aspmx.l.google.com maps to two IP addresses — 192.178.155.26 and 2607:f8b0:4004:c17::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com maps to two IP addresses — 172.253.157.27 and 2a00:1450:400c:c23::1a.