interface21.io - dns.ninja

`interface21.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:831a^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3bc^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.3.188^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.131.26^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`merlin.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bcd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`merlin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1cd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`merlin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21cd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`merlin.ns.cloudflare.com`
		A	108.162.193.205^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`merlin.ns.cloudflare.com`
		A	172.64.33.205^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`merlin.ns.cloudflare.com`
		A	173.245.59.205^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`merlin.ns.cloudflare.com`
NS	`rihana.ns.cloudflare.com`
		A	2606:4700:50::adf5:3af4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rihana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rihana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rihana.ns.cloudflare.com`
		A	108.162.192.244^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rihana.ns.cloudflare.com`
		A	172.64.32.244^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rihana.ns.cloudflare.com`
		A	173.245.58.244^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rihana.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	192.178.218.26^{🇺🇸 Google192.178.218.0/24}
			PTR	`yuiadtq-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::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.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::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::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.3.188, 172.67.131.26
		IPv6 hints	2606:4700:3034::ac43:831a, 2606:4700:3037::6815:3bc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=47, name=cloudflare-ech.com
SOA	`merlin.ns.cloudflare.com`dns@cloudflare.com serial=2410072814

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1785690083

Subdomains

www.interface21.io

Same first word

interface21.com

interface21.io

interface21.ch

interface21.net

interface21.org

DNS History

20 records (11 active, 9 former)

●NSmerlin.ns.cloudflare.com2017-03-16 → 2026-08-02 · 2 obs

● 2017-03-16 16:46:22
● 2026-08-02 17:15:36

●NSrihana.ns.cloudflare.com2017-03-16 → 2026-08-02 · 2 obs

● 2017-03-16 16:46:22
● 2026-08-02 17:15:36

●MXalt1.aspmx.l.google.com2020-01-14 → 2026-08-02 · 3 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
● 2026-08-02 17:15:36

●MXalt2.aspmx.l.google.com2020-01-14 → 2026-08-02 · 3 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
● 2026-08-02 17:15:36

●MXalt3.aspmx.l.google.com2020-01-14 → 2026-08-02 · 3 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
● 2026-08-02 17:15:36

●MXalt4.aspmx.l.google.com2020-01-14 → 2026-08-02 · 3 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
● 2026-08-02 17:15:36

●MXaspmx.l.google.com2020-01-14 → 2026-08-02 · 3 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
● 2026-08-02 17:15:36

○MXmail.interface21.io2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:46:22
○ 2020-01-14 05:28:02
○ 2026-08-02 17:15:36

●A104.21.3.1882026-02-17 → 2026-08-02 · 3 obs

○ 2020-01-14 05:28:02
● 2026-02-17 16:02:40
● 2026-08-02 17:15:36

○A104.28.4.502017-03-16 → 2020-01-14 · 4 obs

● 2017-03-16 16:46:22
● 2020-01-14 05:28:02
○ 2026-02-17 16:02:40
○ 2026-08-02 17:15:36

○A104.28.5.502017-03-16 → 2020-01-14 · 4 obs

● 2017-03-16 16:46:22
● 2020-01-14 05:28:02
○ 2026-02-17 16:02:40
○ 2026-08-02 17:15:36

●A172.67.131.262026-02-17 → 2026-08-02 · 3 obs

○ 2020-01-14 05:28:02
● 2026-02-17 16:02:40
● 2026-08-02 17:15:36

○A2400:cb00:2048:1::681c:4322017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:46:22
○ 2020-01-14 05:28:02
○ 2026-08-02 17:15:36

○A2400:cb00:2048:1::681c:5322017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 16:46:22
○ 2020-01-14 05:28:02
○ 2026-08-02 17:15:36

○A2606:4700:30::681c:4322020-01-14 → 2020-01-14 · 4 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
○ 2026-02-17 16:02:40
○ 2026-08-02 17:15:36

○A2606:4700:30::681c:5322020-01-14 → 2020-01-14 · 4 obs

○ 2017-03-16 16:46:22
● 2020-01-14 05:28:02
○ 2026-02-17 16:02:40
○ 2026-08-02 17:15:36

●A2606:4700:3034::ac43:831a2026-06-28 → 2026-08-02 · 3 obs

○ 2026-02-17 16:02:40
● 2026-06-28 19:53:28
● 2026-08-02 17:15:36

○A2606:4700:3035::6815:3bc2026-02-17 → 2026-02-17 · 4 obs

○ 2020-01-14 05:28:02
● 2026-02-17 16:02:40
○ 2026-06-28 19:53:28
○ 2026-08-02 17:15:36

●A2606:4700:3037::6815:3bc2026-06-28 → 2026-08-02 · 3 obs

○ 2026-02-17 16:02:40
● 2026-06-28 19:53:28
● 2026-08-02 17:15:36

○A2606:4700:3037::ac43:831a2026-02-17 → 2026-02-17 · 4 obs

○ 2020-01-14 05:28:02
● 2026-02-17 16:02:40
○ 2026-06-28 19:53:28
○ 2026-08-02 17:15:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io	-
interface21.io	rihana.ns.cloudflare.com, merlin.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.244

NS records: rihana.ns.cloudflare.com, merlin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for interface21.io (unsigned zone)

⏱️ Timing

Total: 396ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.131.26, 104.21.3.188`
AAAA	2	`2606:4700:3037::6815:3bc, 2606:4700:3034::ac43:831a`
NS	2	`merlin.ns.cloudflare.com, rihana.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`merlin.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

The domain www.interface21.io falls under the parent interface21.io.

IP Addresses

interface21.io points to the four IP addresses 104.21.3.188, 172.67.131.26, 2606:4700:3034::ac43:831a and 2606:4700:3037::6815:3bc.

Two other host names, along with poptin.com, superformfoundation.one and mistersquid.com, also share IP numbers with interface21.io.

Name Servers

The NS records for interface21.io delegate to merlin.ns.cloudflare.com and rihana.ns.cloudflare.com.

interface21.io shares its NS records with other domains, for example ceis.es, leaksmart.com, xfotos.com and two others.

At least some of interface21.io's name servers are shared with other domains, for example lordfilm-hd26q.icu, 789juji.com, fusionbbqandpizzahouse.com and two more.

These name servers tend to be deployed in combination with the name servers chan.ns.cloudflare.com and harley.ns.cloudflare.com.

DNS names with 6 IP addresses:

merlin.ns.cloudflare.com maps to 108.162.193.205, 172.64.33.205, 173.245.59.205 and 3 additional IP addresses.

rihana.ns.cloudflare.com maps to 108.162.192.244, 172.64.32.244, 173.245.58.244 and 3 additional IP addresses.

Mail Servers

interface21.io has five mail servers, which are 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 interface21.io and other domains, including smet.immo, wcs.k12.in.us, bhamfld.com and two others.

These mail servers tend to appear in combination with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx3.googlemail.com and 3 others.

Host names that have two IP addresses:

The A records for aspmx.l.google.com return 192.178.218.26 and 2607:f8b0:4004:c1b::1b.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1b.