rubberduckdebugging.com - dns.ninja

`rubberduckdebugging.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:c5e4^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:2c53^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.83^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.197.228^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`anna.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a66^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c066^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`anna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2066^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`anna.ns.cloudflare.com`
		A	108.162.192.102^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anna.ns.cloudflare.com`
		A	172.64.32.102^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anna.ns.cloudflare.com`
		A	173.245.58.102^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`anna.ns.cloudflare.com`
NS	`woz.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b96^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c196^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`woz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2196^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`woz.ns.cloudflare.com`
		A	108.162.193.150^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	172.64.33.150^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
		A	173.245.59.150^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`woz.ns.cloudflare.com`
MX	`mx1.forwardemail.net` ⭐
		A	2604:a880:2:d0::306:1^{🇺🇸 DIGITALOCEAN2604:a880:2::/48 DigitalOcean}
			PTR	`mx1.forwardemail.net`
		A	2a02:6ea0:d71e::2^{🇺🇸 CDN772a02:6ea0:d700::/40 Denver IPv6}
			PTR	`mx1.forwardemail.net`
		A	121.127.44.56^{🇺🇸 CDN77121.127.44.0/24 Denver}
			PTR	`mx1.forwardemail.net`
		A	138.197.213.185^{🇺🇸 DIGITALOCEAN138.197.208.0/20 DigitalOcean}
			PTR	`mx1.forwardemail.net`
MX	`mx2.forwardemail.net` ⭐
		A	2604:a880:400:d1::cd:9001^{🇺🇸 DIGITALOCEAN2604:a880:400::/48 DigitalOcean}
			PTR	`mx2.forwardemail.net`
		A	2a02:6ea0:d71e::1^{🇺🇸 CDN772a02:6ea0:d700::/40 Denver IPv6}
			PTR	`mx2.forwardemail.net`
		A	104.248.224.170^{🇺🇸 DIGITALOCEAN104.248.224.0/20 DigitalOcean}
			PTR	`mx2.forwardemail.net`
		A	121.127.44.59^{🇺🇸 CDN77121.127.44.0/24 Denver}
			PTR	`mx2.forwardemail.net`
TXT	`forward-email-site-verification=zvxZFC4INr`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.83, 172.67.197.228
		IPv6 hints	2606:4700:3034::ac43:c5e4, 2606:4700:3035::6815:2c53
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOA	`anna.ns.cloudflare.com`dns@cloudflare.com serial=2411301296

`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=1785939309

rank #496576 globally
rank #206367 in the tld

Same first word

rubberduckdebugging.com

DNS History

27 records (8 active, 19 former)

●NSanna.ns.cloudflare.com2017-05-07 → 2026-08-05 · 3 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
● 2026-08-05 14:44:52

○NSns1.dreamhost.com2015-06-04 → 2016-11-25 · 4 obs

● 2015-06-04 14:41:34
● 2016-11-25 00:12:36
○ 2017-05-07 17:41:26
○ 2026-08-05 14:44:52

○NSns2.dreamhost.com2015-06-04 → 2016-11-25 · 4 obs

● 2015-06-04 14:41:34
● 2016-11-25 00:12:36
○ 2017-05-07 17:41:26
○ 2026-08-05 14:44:52

○NSns3.dreamhost.com2015-06-04 → 2016-11-25 · 4 obs

● 2015-06-04 14:41:34
● 2016-11-25 00:12:36
○ 2017-05-07 17:41:26
○ 2026-08-05 14:44:52

●NSwoz.ns.cloudflare.com2017-05-07 → 2026-08-05 · 3 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
● 2026-08-05 14:44:52

●MXmx1.forwardemail.net2026-02-18 → 2026-08-05 · 3 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
● 2026-08-05 14:44:52

●MXmx2.forwardemail.net2026-02-18 → 2026-08-05 · 3 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
● 2026-08-05 14:44:52

○MXmxa.mailgun.org2017-05-07 → 2020-04-02 · 4 obs

● 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

○MXmxb.mailgun.org2017-05-07 → 2020-04-02 · 4 obs

● 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

○A104.18.50.1152017-05-07 → 2020-04-02 · 5 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

○A104.18.51.1152017-05-07 → 2020-04-02 · 5 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

●A104.21.44.832026-03-24 → 2026-08-05 · 3 obs

○ 2026-02-18 15:19:16
● 2026-03-24 10:52:50
● 2026-08-05 14:44:52

●A172.67.197.2282026-03-24 → 2026-08-05 · 3 obs

○ 2026-02-18 15:19:16
● 2026-03-24 10:52:50
● 2026-08-05 14:44:52

○A173.236.179.2042015-06-04 → 2016-04-06 · 4 obs

● 2015-06-04 14:41:34
● 2016-04-06 08:27:44
○ 2016-11-25 00:12:36
○ 2026-08-05 14:44:52

○A188.114.96.02026-02-18 → 2026-02-18 · 4 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
○ 2026-03-24 10:52:50
○ 2026-08-05 14:44:52

○A188.114.97.02026-02-18 → 2026-02-18 · 4 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
○ 2026-03-24 10:52:50
○ 2026-08-05 14:44:52

○A208.97.151.952016-11-25 → 2016-11-25 · 4 obs

○ 2016-04-06 08:27:44
● 2016-11-25 00:12:36
○ 2017-05-07 17:41:26
○ 2026-08-05 14:44:52

○A2400:cb00:2048:1::6812:32732017-05-07 → 2017-05-07 · 4 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
○ 2020-04-02 04:42:30
○ 2026-08-05 14:44:52

○A2400:cb00:2048:1::6812:33732017-05-07 → 2017-05-07 · 4 obs

○ 2016-11-25 00:12:36
● 2017-05-07 17:41:26
○ 2020-04-02 04:42:30
○ 2026-08-05 14:44:52

○A2606:4700:3030::ac43:c5e42026-03-24 → 2026-03-24 · 4 obs

○ 2026-02-18 15:19:16
● 2026-03-24 10:52:50
○ 2026-07-21 10:21:34
○ 2026-08-05 14:44:52

○A2606:4700:3031::6815:2c532026-03-24 → 2026-03-24 · 4 obs

○ 2026-02-18 15:19:16
● 2026-03-24 10:52:50
○ 2026-07-21 10:21:34
○ 2026-08-05 14:44:52

○A2606:4700:3033::6812:33732020-04-02 → 2020-04-02 · 4 obs

○ 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

●A2606:4700:3034::ac43:c5e42026-07-21 → 2026-08-05 · 3 obs

○ 2026-03-24 10:52:50
● 2026-07-21 10:21:34
● 2026-08-05 14:44:52

○A2606:4700:3035::6812:32732020-04-02 → 2020-04-02 · 4 obs

○ 2017-05-07 17:41:26
● 2020-04-02 04:42:30
○ 2026-02-18 15:19:16
○ 2026-08-05 14:44:52

●A2606:4700:3035::6815:2c532026-07-21 → 2026-08-05 · 3 obs

○ 2026-03-24 10:52:50
● 2026-07-21 10:21:34
● 2026-08-05 14:44:52

○A2a06:98c1:3120::2026-02-18 → 2026-02-18 · 4 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
○ 2026-03-24 10:52:50
○ 2026-08-05 14:44:52

○A2a06:98c1:3121::2026-02-18 → 2026-02-18 · 4 obs

○ 2020-04-02 04:42:30
● 2026-02-18 15:19:16
○ 2026-03-24 10:52:50
○ 2026-08-05 14:44:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
rubberduckdebugging.com	anna.ns.cloudflare.com, woz.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.150

NS records: anna.ns.cloudflare.com, woz.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 245ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.197.228, 104.21.44.83`
AAAA	2	`2606:4700:3035::6815:2c53, 2606:4700:3034::ac43:c5e4`
NS	2	`anna.ns.cloudflare.com, woz.ns.cloudflare.com`
MX	2	`mx1.forwardemail.net (pri: 10), mx2.forwardemail.net (pri: 10)`
TXT	1	`forward-email-site-verification=zvxZFC4I`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`anna.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

rubberduckdebugging.com resolves to four IP addresses: 104.21.44.83, 172.67.197.228, 2606:4700:3034::ac43:c5e4 and 2606:4700:3035::6815:2c53.

Among the host names that share IP numbers with rubberduckdebugging.com are com-active-hub.info, qdhya.com, baiyuntong.cn and two others.

Name Servers

rubberduckdebugging.com uses two name servers for its delegation: anna.ns.cloudflare.com and woz.ns.cloudflare.com.

rubberduckdebugging.com has the same name server delegation as a number of other domains, such as laadagency.com, serverbasket.ae, cyclonemusic.uk and two more.

rubberduckdebugging.com partially shares its NS delegation with several other domains, including ctection.com, (0x787878)(0x706f726e)movies.net, kjoppremiumforerkort.com and two others.

These name servers regularly co-occur with the name servers marek.ns.cloudflare.com, cash.ns.cloudflare.com and tom.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

Hostname anna.ns.cloudflare.com directs to 108.162.192.102, 172.64.32.102 and 173.245.58.102 along with 3 other IP addresses.

Hostname woz.ns.cloudflare.com directs to 108.162.193.150, 172.64.33.150 and 173.245.59.150 along with 3 other IP addresses.

Mail Servers

The MX records for rubberduckdebugging.com point to two mail servers: mx1.forwardemail.net and mx2.forwardemail.net.

rubberduckdebugging.com has the same mail server arrangement as a number of other domains, for example extendys.com, mortier.co.uk, seguros-responsabilidadcivil.com and two more.

At least a portion of rubberduckdebugging.com's mail servers are also used by other domains, for example inkf.in.

Both mx1.forwardemail.net and mx2.forwardemail.net resolve to four IP addresses: mx1.forwardemail.net directs to 121.127.44.56, 138.197.213.185, 2604:a880:2:d0::306:1 and 2a02:6ea0:d71e::2, and mx2.forwardemail.net directs to 104.248.224.170, 121.127.44.59, 2604:a880:400:d1::cd:9001 and 2a02:6ea0:d71e::1.