51bits.com - dns.ninja

`51bits.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:16e:df01::258^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:16e:df01::259^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	18.208.88.157^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
A	98.84.224.111^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
NS	`dns1.p08.nsone.net` ⭐
		A	2620:4d:4000:6259:7:8:0:1^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`ns8.demysdns.com`
			PTR	`dns1.p08.nsone.net`
		A	198.51.44.8^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`ns8.demysdns.com`
			PTR	`dns1.p08.nsone.net`
NS	`dns2.p08.nsone.net`
		A	2a00:edc0:6259:7:8::2^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns2.p08.nsone.net`
		A	198.51.45.8^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns2.p08.nsone.net`
NS	`dns3.p08.nsone.net`
		A	2620:4d:4000:6259:7:8:0:3^{🇺🇸 NSONE2620:4d:4000::/48 2620:4D:4000::/48}
			PTR	`dns3.p08.nsone.net`
		A	198.51.44.72^{🇺🇸 NSONE198.51.44.0/24 198.51.44.0}
			PTR	`dns3.p08.nsone.net`
NS	`dns4.p08.nsone.net`
		A	2a00:edc0:6259:7:8::4^{🇺🇸 NSONE2a00:edc0:6259::/48 NS1-2}
			PTR	`dns4.p08.nsone.net`
		A	198.51.45.72^{🇺🇸 NSONE198.51.45.0/24 198.51.45.0}
			PTR	`dns4.p08.nsone.net`
MX	`mx01.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
			PTR	`mx3.mail.icloud.com`
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
MX	`mx02.mail.icloud.com` ⭐
		A	17.42.251.62^{🇺🇸 Apple17.42.0.0/16}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
			PTR	`mx3.mail.icloud.com`
		A	17.56.9.31^{🇺🇸 Apple17.56.9.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.152.5^{🇺🇸 Apple17.57.152.0/23}
			PTR	`ic4-privaterelay.appleid.com`
			PTR	`smtp1.ic4-privaterelay.appleid.com`
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.154.33^{🇺🇸 Apple17.57.154.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
		A	17.57.155.25^{🇺🇸 Apple17.57.155.0/24}
		A	17.57.156.30^{🇺🇸 Apple17.57.156.0/24}
			PTR	`mx01.mail.icloud.com`
			PTR	`mx02.mail.icloud.com`
TXT	`v=spf1 redirect=icloud.com`
TXT	`"v=spf1 redirect=icloud.com"`
TXT	`apple-domain=OkTGdzhEZrXLCiuo`
TXT	`google-site-verification=yjyAPbvU3XeZNrsNitzGTyX80uyTPhLzriGMiw9qlmw`
SOA	`dns1.p08.nsone.net`hostmaster@nsone.net serial=1662144961

`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=1783248636

WOT: UNKNOWN (88/100)

Subdomains

www.51bits.com

Same first word

51bits.com

Similar names

15bits.com

DNS History

39 records (10 active, 29 former)

●NSdns1.p08.nsone.net2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

●NSdns2.p08.nsone.net2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

●NSdns3.p08.nsone.net2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

●NSdns4.p08.nsone.net2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

○NSns1.hover.com2016-03-22 → 2016-07-15 · 5 obs

○ 2015-12-20 05:52:24
● 2016-03-22 01:18:46
● 2016-07-15 10:13:12
○ 2017-04-01 15:37:24
○ 2026-07-05 11:10:00

○NSns1.linode.com2015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

○NSns1.mediatemple.net2017-04-01 → 2017-04-01 · 4 obs

○ 2016-07-15 10:13:12
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○NSns2.hover.com2016-03-22 → 2016-07-15 · 5 obs

○ 2015-12-20 05:52:24
● 2016-03-22 01:18:46
● 2016-07-15 10:13:12
○ 2017-04-01 15:37:24
○ 2026-07-05 11:10:00

○NSns2.linode.com2015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

○NSns2.mediatemple.net2017-04-01 → 2017-04-01 · 4 obs

○ 2016-07-15 10:13:12
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○NSns27.domaincontrol.com2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 04:43:24
○ 2015-04-03 11:14:50
○ 2026-07-05 11:10:00

○NSns28.domaincontrol.com2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 04:43:24
○ 2015-04-03 11:14:50
○ 2026-07-05 11:10:00

○NSns3.linode.com2015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

○NSns4.linode.com2015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

○NSns5.linode.com2015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

○MXalt1.aspmx.l.google.com2015-04-03 → 2017-04-01 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○MXalt2.aspmx.l.google.com2015-04-03 → 2017-04-01 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○MXaspmx.l.google.com2015-04-03 → 2017-04-01 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○MXaspmx2.googlemail.com2015-04-03 → 2017-04-01 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○MXaspmx3.googlemail.com2015-04-03 → 2017-04-01 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○MXmailstore1.secureserver.net2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 04:43:24
○ 2015-04-03 11:14:50
○ 2026-07-05 11:10:00

●MXmx01.mail.icloud.com2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

●MXmx02.mail.icloud.com2026-02-25 → 2026-07-05 · 3 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
● 2026-07-05 11:10:00

○MXsmtp.secureserver.net2008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 04:43:24
○ 2015-04-03 11:14:50
○ 2026-07-05 11:10:00

○A13.52.188.952026-03-29 → 2026-04-30 · 14 obs

○ 2026-03-03 05:53:42
● 2026-03-29 09:57:12
○ 2026-03-30 02:35:24
○ 2026-04-03 18:46:26
● 2026-04-08 11:28:46
○ 2026-04-08 12:35:36
● 2026-04-20 12:03:08
● 2026-04-20 16:41:02
○ 2026-04-20 23:44:22
● 2026-04-21 12:39:24
○ 2026-04-22 17:38:14
● 2026-04-30 15:12:10
○ 2026-04-30 16:11:06
○ 2026-07-05 11:10:00

●A18.208.88.1572026-02-25 → 2026-07-05 · 9 obs

○ 2026-02-25 04:05:58
● 2026-02-25 10:37:00
○ 2026-03-03 05:53:42
○ 2026-03-30 02:35:24
● 2026-04-03 05:16:36
○ 2026-04-03 18:46:26
○ 2026-04-30 16:11:06
● 2026-07-05 11:09:56
● 2026-07-05 11:10:00

○A216.70.123.1212016-03-22 → 2017-04-01 · 5 obs

○ 2015-12-20 05:52:24
● 2016-03-22 01:18:46
● 2017-04-01 15:37:24
○ 2026-02-25 04:05:58
○ 2026-07-05 11:10:00

○A23.92.26.2312015-04-03 → 2015-12-20 · 5 obs

○ 2008-03-15 04:43:24
● 2015-04-03 11:14:50
● 2015-12-20 05:52:24
○ 2016-03-22 01:18:46
○ 2026-07-05 11:10:00

●A2600:1f18:16e:df01::2582026-02-25 → 2026-07-05 · 9 obs

●A2600:1f18:16e:df01::2592026-02-25 → 2026-07-05 · 9 obs

○A2600:1f1c:446:4900::2582026-03-29 → 2026-04-30 · 14 obs

○A2600:1f1c:446:4900::2592026-03-29 → 2026-04-30 · 14 obs

○A2a05:d014:58f:6200::2582026-02-25 → 2026-04-30 · 19 obs

○ 2017-04-01 15:37:24
● 2026-02-25 04:05:58
○ 2026-02-25 10:37:00
● 2026-03-03 05:53:42
○ 2026-03-29 09:57:12
● 2026-03-30 02:35:24
○ 2026-04-03 05:16:36
● 2026-04-03 18:46:26
○ 2026-04-08 11:28:46
● 2026-04-08 12:35:36
○ 2026-04-20 12:03:08
○ 2026-04-20 16:41:02
● 2026-04-20 23:44:22
○ 2026-04-21 12:39:24
● 2026-04-22 17:38:14
○ 2026-04-30 15:12:10
● 2026-04-30 16:11:06
○ 2026-07-05 11:09:56
○ 2026-07-05 11:10:00

○A2a05:d014:58f:6200::2592026-02-25 → 2026-04-30 · 19 obs

○A35.157.26.1352026-02-25 → 2026-04-30 · 19 obs

○A52.52.192.1912026-03-29 → 2026-04-30 · 14 obs

○A63.176.8.2182026-02-25 → 2026-04-30 · 19 obs

○A64.202.189.1702008-03-15 → 2008-03-15 · 3 obs

● 2008-03-15 04:43:24
○ 2015-04-03 11:14:50
○ 2026-07-05 11:10:00

●A98.84.224.1112026-02-25 → 2026-07-05 · 9 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...	-
51bits.com	dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net	-

✅ Authoritative Response

Server:198.51.44.8

NS records: dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51bits.com (unsigned zone)

⏱️ Timing

Total: 441ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`18.208.88.157, 98.84.224.111`
AAAA	2	`2600:1f18:16e:df01::259, 2600:1f18:16e:df01::258`
NS	4	`dns1.p08.nsone.net, dns2.p08.nsone.net...`
MX	2	`mx02.mail.icloud.com (pri: 10), mx01.mail.icloud.com (pri: 10)`
TXT	4	`v=spf1 redirect=icloud.com, "v=spf1 redirect=icloud.com"...`
SOA	1	`dns1.p08.nsone.net hostmaster.nsone.net`

Analysis

Hierarchy

51bits.com is a parent domain of www.51bits.com.

IP Addresses

51bits.com has four IP addresses: 18.208.88.157, 98.84.224.111, 2600:1f18:16e:df01::258 and 2600:1f18:16e:df01::259.

fomo.cz, design-system-playground.netlify.com, webdevdan.com and two other host names share IP numbers with 51bits.com.

Name Servers

The authoritative name servers for 51bits.com are dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net and dns4.p08.nsone.net.

51bits.com shares at least some of its name servers with other domains, including abigaillin.com, mbusto.com, budgetimpactmodels.com and two others.

These name servers are frequently seen alongside ns01.squarespacedns.com, ns02.squarespacedns.com, ns03.squarespacedns.com and 7 other name servers.

The host names dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net and dns4.p08.nsone.net each resolve to two IP addresses: dns1.p08.nsone.net resolves to 198.51.44.8 and 2620:4d:4000:6259:7:8:0:1; dns2.p08.nsone.net resolves to 198.51.45.8 and 2a00:edc0:6259:7:8::2; dns3.p08.nsone.net resolves to 198.51.44.72 and 2620:4d:4000:6259:7:8:0:3; dns4.p08.nsone.net resolves to 198.51.45.72 and 2a00:edc0:6259:7:8::4.

Mail Servers

Mail for 51bits.com is handled by two mail servers — mx01.mail.icloud.com and mx02.mail.icloud.com.

51bits.com uses an identical mail server configuration to several other domains — among them tuffield.com, arnd.be, behets.org and two more.

51bits.com has at least partial mail server overlap with other domains such as durakovic.nl, barningonline.nl, rasner.net and two more.

Hostnames that resolve to 6 IP addresses:

mx01.mail.icloud.com maps to 17.42.251.62, 17.56.9.31, 17.57.152.5 and 3 additional IP addresses.

mx02.mail.icloud.com maps to 17.42.251.62, 17.56.9.31, 17.57.152.5 and 3 additional IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.42.251.62 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.56.9.31 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.152.5 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.154.33 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.155.25 IP addresses.

mx01.mail.icloud.com and mx02.mail.icloud.com each have 17.57.156.30 IP addresses.