`opt1.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:a99f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1bc1^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.27.193^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.169.159^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`piper.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2623^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piper.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c223^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`piper.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2223^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`piper.ns.cloudflare.com`
		A	108.162.194.35^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piper.ns.cloudflare.com`
		A	162.159.38.35^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piper.ns.cloudflare.com`
		A	172.64.34.35^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piper.ns.cloudflare.com`
NS	`uriah.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cc2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`uriah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3c2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`uriah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23c2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`uriah.ns.cloudflare.com`
		A	108.162.195.194^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`uriah.ns.cloudflare.com`
		A	162.159.44.194^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`uriah.ns.cloudflare.com`
		A	172.64.35.194^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`uriah.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f27.1e100.net`
		A	64.233.180.26^{🇺🇸 Google64.233.180.0/24}
			PTR	`on-in-f26.1e100.net`
			PTR	`pe-in-f26.1e100.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::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::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`v=spf1 include:zcsend.net include:_spf.mlsend.com include:_spf.google.com inc...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.27.193, 172.67.169.159
		IPv6 hints	2606:4700:3033::ac43:a99f, 2606:4700:3037::6815:1bc1
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`piper.ns.cloudflare.com`dns@cloudflare.com serial=2410432859

`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=1785200943

Same first word

opt1.me

opt1.net

opt1.jp

opt1.com

opt1.io

opt1.ru

Similar names

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1top.pro

top1.kz

top1.sale

top1.ru

top1.gold

top1.co.id

1top.by

1top.gold

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p1to.com

1top.de

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top1.me

1top.com

top1.ai

top1.pl

1top.com.ua

1top.group

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1pot.com

top1.cc

1opt.com.ua

top1.fm

pto1.com

top1.in

1opt.com

top1.vn

t1op.shop

top1.pro

1opt.info

1top.icu

top1.tv

top1.com

top1.it

top1.org

top1.co

p1ot.com

1pto.com

1top.club

top1.ro

p1to.kim

top1.immo

top1.co.in

1top.net

top1.de.com

top1.net

top1.sakura.ne.jp

top1.asia

1top.org

1top.vn

top1.net.cn

top1.com.vn

top1.com.tw

1top.it

top1.money

top1.group

DNS History

13 records (11 active, 2 former)

●NSpiper.ns.cloudflare.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●NSuriah.ns.cloudflare.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●MXalt1.aspmx.l.google.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●MXalt2.aspmx.l.google.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●MXalt3.aspmx.l.google.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●MXalt4.aspmx.l.google.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●MXaspmx.l.google.com2026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●A104.21.27.1932026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

●A172.67.169.1592026-06-15 → 2026-07-28 · 2 obs

● 2026-06-15 22:28:06
● 2026-07-28 01:42:44

○A2606:4700:3030::6815:1bc12026-06-15 → 2026-06-15 · 3 obs

● 2026-06-15 22:28:06
○ 2026-06-21 18:30:46
○ 2026-07-28 01:42:44

●A2606:4700:3033::ac43:a99f2026-06-21 → 2026-07-28 · 3 obs

○ 2026-06-15 22:28:06
● 2026-06-21 18:30:46
● 2026-07-28 01:42:44

○A2606:4700:3034::ac43:a99f2026-06-15 → 2026-06-15 · 3 obs

● 2026-06-15 22:28:06
○ 2026-06-21 18:30:46
○ 2026-07-28 01:42:44

●A2606:4700:3037::6815:1bc12026-06-21 → 2026-07-28 · 3 obs

○ 2026-06-15 22:28:06
● 2026-06-21 18:30:46
● 2026-07-28 01:42:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a2.nic.io, a0.nic.io, c0.nic.io, b0.nic.io	-
opt1.io	uriah.ns.cloudflare.com, piper.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.194

NS records: uriah.ns.cloudflare.com, piper.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opt1.io (unsigned zone)

⏱️ Timing

Total: 277ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.27.193, 172.67.169.159`
AAAA	2	`2606:4700:3033::ac43:a99f, 2606:4700:3037::6815:1bc1`
NS	2	`piper.ns.cloudflare.com, uriah.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	1	`v=spf1 include:zcsend.net include:_spf.m`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`piper.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

opt1.io has four IP addresses: 104.21.27.193, 172.67.169.159, 2606:4700:3033::ac43:a99f and 2606:4700:3037::6815:1bc1.

Among the host names that share IP numbers with opt1.io are spostobadi.com, iulianhalac.com, bpag-encompass.org.uk and two others.

Name Servers

DNS delegation for opt1.io points to two name servers: piper.ns.cloudflare.com and uriah.ns.cloudflare.com.

opt1.io has the same name server delegation as a number of other domains, such as daddywolf.cn, hatchpet.com, esysmx.net and two more.

opt1.io has at least partial name server overlap with other domains, such as postcheetah.com, 820mm.live, andradescleaning.com and two others.

It is common to see these name servers used together with name servers ezra.ns.cloudflare.com and curt.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

piper.ns.cloudflare.com has IP addresses 108.162.194.35, 162.159.38.35 and 172.64.34.35, plus 3 other.

uriah.ns.cloudflare.com has IP addresses 108.162.195.194, 162.159.44.194 and 172.64.35.194, plus 3 other.