stackoverflow.co - dns.ninja

`stackoverflow.co`

DNSSEC	⚠️ Not signed
A	3.33.186.135^{🇺🇸 Amazon3.33.176.0/20}
		PTR	`afa7f374f51cc8991.awsglobalaccelerator.com`
A	15.197.167.90^{🇺🇸 Amazon15.197.160.0/20}
NS	`dns1.p02.nsone.net` ⭐
		A	2620:4d:4000:6259:7:2:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns1.p02.nsone.net`
		A	198.51.44.2^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns1.p02.nsone.net`
NS	`dns2.p02.nsone.net`
		A	2a00:edc0:6259:7:2::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p02.nsone.net`
		A	198.51.45.2^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p02.nsone.net`
NS	`dns3.p02.nsone.net`
		A	2620:4d:4000:6259:7:2:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p02.nsone.net`
		A	198.51.44.66^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p02.nsone.net`
NS	`dns4.p02.nsone.net`
		A	2a00:edc0:6259:7:2::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p02.nsone.net`
		A	198.51.45.66^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p02.nsone.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f27.1e100.net`
		A	172.253.139.27^{🇺🇸 Google172.253.139.0/24}
			PTR	`yuiadsk-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 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::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
TXT	`facebook-domain-verification=y59jadh8mrlmq9v3u8ff5z42rd7723`
TXT	`google-site-verification=X9QXJIDLaXpZ5fQgAqrgCNUD5o4P_rRk5JI2YELPqf4]`
TXT	`v=spf1 include:_spf.google.com ~all`
TXT	`google-site-verification=NihQgsb9hY_bT_4JYEJSkeLKgkAJyPFFDEqD82p76ug`
TXT	`adobe-idp-site-verification=25ba5203f3687c9cd6ee3223ee5de1528917828d1da3ebd3b...`
SOA	`dns1.p02.nsone.net`domains+netlify@netlify.com serial=1662569678

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759681646

rank #6943 globally
rank #32 in the tld
📈 Tranco rank: #29,241

Subdomains

www.stackoverflow.co

survey.stackoverflow.co

Same first word

Similar names

overflowstack.com

flowoverstack.com

wolfrevokcats.com

overstackflow.blogspot.com

stackoverlfow.com

DNS History

16 records (10 active, 6 former)

●NSdns1.p02.nsone.net2026-02-15 → 2026-06-13 · 3 obs

○ 2017-04-04 09:17:36
● 2026-02-15 00:27:52
● 2026-06-13 23:42:26

●NSdns2.p02.nsone.net2026-02-15 → 2026-06-13 · 3 obs

○ 2017-04-04 09:17:36
● 2026-02-15 00:27:52
● 2026-06-13 23:42:26

●NSdns3.p02.nsone.net2026-02-15 → 2026-06-13 · 3 obs

○ 2017-04-04 09:17:36
● 2026-02-15 00:27:52
● 2026-06-13 23:42:26

●NSdns4.p02.nsone.net2026-02-15 → 2026-06-13 · 3 obs

○ 2017-04-04 09:17:36
● 2026-02-15 00:27:52
● 2026-06-13 23:42:26

○NSns1.parkingcrew.net2015-05-21 → 2017-04-04 · 4 obs

● 2015-05-21 00:47:04
● 2017-04-04 09:17:36
○ 2026-02-15 00:27:52
○ 2026-06-13 23:42:26

○NSns2.parkingcrew.net2015-05-21 → 2017-04-04 · 4 obs

● 2015-05-21 00:47:04
● 2017-04-04 09:17:36
○ 2026-02-15 00:27:52
○ 2026-06-13 23:42:26

●MXalt1.aspmx.l.google.com2026-02-15 → 2026-06-13 · 28 obs

○ 2017-04-04 09:17:36
● 2026-02-15 00:27:52
● 2026-06-07 06:47:44
○ 2026-06-07 07:21:42
● 2026-06-07 08:14:12
● 2026-06-08 13:08:54
○ 2026-06-08 14:37:58
● 2026-06-08 15:20:24
● 2026-06-08 15:50:44
○ 2026-06-08 16:48:28
● 2026-06-08 21:21:34
● 2026-06-10 18:15:48
○ 2026-06-10 18:47:52
● 2026-06-10 19:26:44
○ 2026-06-10 20:15:44
○ 2026-06-10 21:29:44
● 2026-06-11 00:23:04
● 2026-06-11 01:40:00
○ 2026-06-11 02:23:58
● 2026-06-11 03:02:36
● 2026-06-11 05:50:24
○ 2026-06-11 06:48:04
○ 2026-06-11 07:23:08
● 2026-06-11 07:56:06
● 2026-06-12 19:43:36
○ 2026-06-12 20:27:08
● 2026-06-12 22:19:42
● 2026-06-13 23:42:26

●MXalt2.aspmx.l.google.com2026-02-15 → 2026-06-13 · 28 obs

●MXalt3.aspmx.l.google.com2026-02-15 → 2026-06-13 · 28 obs

●MXaspmx.l.google.com2026-02-15 → 2026-06-13 · 28 obs

○MXmail.h-email.net2015-05-21 → 2017-04-04 · 4 obs

● 2015-05-21 00:47:04
● 2017-04-04 09:17:36
○ 2026-02-15 00:27:52
○ 2026-06-13 23:42:26

●A15.197.167.902026-02-15 → 2026-06-13 · 28 obs

○A185.53.177.62015-05-21 → 2016-07-21 · 7 obs

● 2015-05-21 00:47:04
● 2015-11-03 13:53:54
○ 2016-01-28 04:18:42
○ 2016-06-13 03:49:54
● 2016-07-21 22:20:10
○ 2016-12-01 07:14:08
○ 2026-06-13 23:42:26

○A185.53.178.62016-12-01 → 2017-04-04 · 5 obs

○ 2016-07-21 22:20:10
● 2016-12-01 07:14:08
● 2017-04-04 09:17:36
○ 2026-02-15 00:27:52
○ 2026-06-13 23:42:26

●A3.33.186.1352026-02-15 → 2026-06-13 · 28 obs

○A54.72.9.512016-01-28 → 2016-06-13 · 5 obs

○ 2015-11-03 13:53:54
● 2016-01-28 04:18:42
● 2016-06-13 03:49:54
○ 2016-07-21 22:20:10
○ 2026-06-13 23:42:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
stackoverflow.co	dns1.p02.nsone.net, dns2.p02.nsone.net, dns3.p02.nsone.net, dns4.p02.nsone.net	-

✅ Authoritative Response

Server:198.51.44.66

NS records: dns1.p02.nsone.net, dns2.p02.nsone.net, dns3.p02.nsone.net, dns4.p02.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackoverflow.co (unsigned zone)

⏱️ Timing

Total: 486ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`3.33.186.135, 15.197.167.90`
NS	4	`dns1.p02.nsone.net, dns2.p02.nsone.net...`
MX	4	`alt3.aspmx.l.google.com (pri: 10), alt2.aspmx.l.google.com (pri: 5)...`
TXT	5	`facebook-domain-verification=y59jadh8mrl, google-site-verification=X9QXJIDLaXpZ5fQ...`
SOA	1	`dns1.p02.nsone.net domains+netlify.netli`

Analysis

Hierarchy

stackoverflow.co serves as the parent of www.stackoverflow.co and survey.stackoverflow.co.

IP Addresses

stackoverflow.co points to two IP numbers: 3.33.186.135 and 15.197.167.90.

csstails.com, grandcinema.com, cluster-api-ibmcloud.sigs.k8s.io plus two other host names have IP numbers in common with stackoverflow.co.

Name Servers

stackoverflow.co is delegated to four name servers, dns1.p02.nsone.net, dns2.p02.nsone.net, dns3.p02.nsone.net and dns4.p02.nsone.net.

The name servers of stackoverflow.co overlap at least partially with those of other domains — among them thatkiddesign.com, semanticbidder.com, zeeeggs.com and two more.

These name servers commonly appear in delegations together with ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com and 7 other.

Each of the four hosts dns1.p02.nsone.net, dns2.p02.nsone.net, dns3.p02.nsone.net and dns4.p02.nsone.net has two IP addresses. dns1.p02.nsone.net points to 198.51.44.2 and 2620:4d:4000:6259:7:2:0:1. dns2.p02.nsone.net points to 198.51.45.2 and 2a00:edc0:6259:7:2::2. dns3.p02.nsone.net points to 198.51.44.66 and 2620:4d:4000:6259:7:2:0:3. dns4.p02.nsone.net points to 198.51.45.66 and 2a00:edc0:6259:7:2::4.

Mail Servers

stackoverflow.co is handled by four mail servers, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.

At least some of the mail servers used by stackoverflow.co are shared with other domains: op97.k12.il.us, ns500731.ns500742.ns500742.ns500742.ns500742.ns500671.ns500742.ns500705.ns500649.ns500688.ns500678.tenderladiesbz.com, hydromet.gov.bz and two others among them.

It is common to find these mail servers paired with the mail servers alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com, as well as two others.

Each of the four hosts aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com has two IP addresses. aspmx.l.google.com points to 172.253.139.27 and 2607:f8b0:4004:c23::1b. alt1.aspmx.l.google.com points to 108.177.123.27 and 2800:3f0:4003:c0f::1a. alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a. alt3.aspmx.l.google.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1b.