`openhtc.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:9e0b^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3111^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.49.17^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.158.11^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`rob.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b8c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rob.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rob.ns.cloudflare.com`
		A	108.162.193.140^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	172.64.33.140^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
		A	173.245.59.140^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rob.ns.cloudflare.com`
NS	`vida.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aec^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vida.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0ec^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vida.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20ec^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vida.ns.cloudflare.com`
		A	108.162.192.236^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vida.ns.cloudflare.com`
		A	172.64.32.236^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vida.ns.cloudflare.com`
		A	173.245.58.236^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vida.ns.cloudflare.com`
MX	`mail.rollernet.us` ⭐
		A	2607:fe70:0:3::a^{🇺🇸 ROLLERNET-AS2607:fe70::/32 Roller Network LLC IPv6 Prefix}
			PTR	`mail.rollernet.us`
		A	208.79.240.2^{🇺🇸 ROLLERNET-AS208.79.240.0/22 Roller Network LLC IPv4 Prefix}
			PTR	`mail.rollernet.us`
MX	`mail2.rollernet.us` ⭐
		A	2607:fe70:0:4::a^{🇺🇸 ROLLERNET-AS2607:fe70::/32 Roller Network LLC IPv6 Prefix}
			PTR	`mail2.rollernet.us`
		A	208.79.241.2^{🇺🇸 ROLLERNET-AS208.79.240.0/22 Roller Network LLC IPv4 Prefix}
			PTR	`mail2.rollernet.us`
TXT	`v=spf1 include:auth.spf.rollernet.us mx -all`
TXT	`v=spf1 include:spf.efwd.registrar-servers.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.49.17, 172.67.158.11
		IPv6 hints	2606:4700:3034::ac43:9e0b, 2606:4700:3037::6815:3111
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`rob.ns.cloudflare.com`dns@cloudflare.com serial=2400670473

`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=1776021513

📈 Tranco rank: #317,643

Same first word

openhtc.io

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DNS History

16 records (8 active, 8 former)

●NSrob.ns.cloudflare.com2018-05-06 → 2026-04-12 · 2 obs

● 2018-05-06 16:41:02
● 2026-04-12 19:30:50

●NSvida.ns.cloudflare.com2018-05-06 → 2026-04-12 · 2 obs

● 2018-05-06 16:41:02
● 2026-04-12 19:30:50

●MXmail.rollernet.us2018-05-06 → 2026-04-12 · 2 obs

● 2018-05-06 16:41:02
● 2026-04-12 19:30:50

●MXmail2.rollernet.us2018-05-06 → 2026-04-12 · 2 obs

● 2018-05-06 16:41:02
● 2026-04-12 19:30:50

○A104.18.34.2442018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 16:41:02
○ 2026-03-16 23:10:10
○ 2026-04-12 19:30:50

○A104.18.35.2442018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 16:41:02
○ 2026-03-16 23:10:10
○ 2026-04-12 19:30:50

●A104.21.49.172026-03-16 → 2026-04-12 · 5 obs

○ 2018-05-06 16:41:02
● 2026-03-16 23:10:10
○ 2026-03-18 22:24:38
○ 2026-04-08 11:14:32
● 2026-04-12 19:30:50

●A172.67.158.112026-03-16 → 2026-04-12 · 5 obs

○ 2018-05-06 16:41:02
● 2026-03-16 23:10:10
○ 2026-03-18 22:24:38
○ 2026-04-08 11:14:32
● 2026-04-12 19:30:50

○A188.114.96.02026-03-18 → 2026-04-08 · 4 obs

○ 2026-03-16 23:10:10
● 2026-03-18 22:24:38
● 2026-04-08 11:14:32
○ 2026-04-12 19:30:50

○A188.114.97.02026-03-18 → 2026-04-08 · 4 obs

○ 2026-03-16 23:10:10
● 2026-03-18 22:24:38
● 2026-04-08 11:14:32
○ 2026-04-12 19:30:50

○A2400:cb00:2048:1::6812:22f42018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 16:41:02
○ 2026-03-16 23:10:10
○ 2026-04-12 19:30:50

○A2400:cb00:2048:1::6812:23f42018-05-06 → 2018-05-06 · 3 obs

● 2018-05-06 16:41:02
○ 2026-03-16 23:10:10
○ 2026-04-12 19:30:50

●A2606:4700:3034::ac43:9e0b2026-03-16 → 2026-04-12 · 5 obs

○ 2018-05-06 16:41:02
● 2026-03-16 23:10:10
○ 2026-03-18 22:24:38
○ 2026-04-08 11:14:32
● 2026-04-12 19:30:50

●A2606:4700:3037::6815:31112026-03-16 → 2026-04-12 · 5 obs

○ 2018-05-06 16:41:02
● 2026-03-16 23:10:10
○ 2026-03-18 22:24:38
○ 2026-04-08 11:14:32
● 2026-04-12 19:30:50

○A2a06:98c1:3120::2026-03-18 → 2026-04-08 · 4 obs

○ 2026-03-16 23:10:10
● 2026-03-18 22:24:38
● 2026-04-08 11:14:32
○ 2026-04-12 19:30:50

○A2a06:98c1:3121::2026-03-18 → 2026-04-08 · 4 obs

○ 2026-03-16 23:10:10
● 2026-03-18 22:24:38
● 2026-04-08 11:14:32
○ 2026-04-12 19:30:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a2.nic.io, a0.nic.io, c0.nic.io, b0.nic.io	-
openhtc.io	rob.ns.cloudflare.com, vida.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.140

NS records: rob.ns.cloudflare.com, vida.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for openhtc.io (unsigned zone)

⏱️ Timing

Total: 197ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.158.11, 104.21.49.17`
AAAA	2	`2606:4700:3034::ac43:9e0b, 2606:4700:3037::6815:3111`
NS	2	`rob.ns.cloudflare.com, vida.ns.cloudflare.com`
MX	2	`mail.rollernet.us (pri: 0), mail2.rollernet.us (pri: 0)`
TXT	2	`v=spf1 include:auth.spf.rollernet.us mx , v=spf1 include:spf.efwd.registrar-server`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`rob.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

openhtc.io points to four IP numbers: 2606:4700:3034::ac43:9e0b, 2606:4700:3037::6815:3111, 104.21.49.17 and 172.67.158.11.

Other host names, for instance mail.power-chip.ru, gamemie.com, 3colleges.com, danube-forum-bratislava.eu and martinasedlar.com share IP numbers with openhtc.io.

Name Servers

Delegation for openhtc.io rests with two name servers, rob.ns.cloudflare.com and vida.ns.cloudflare.com.

openhtc.io shares the same name server setup as other domains, including camjams.com, pretutorial.com, eyeteatalks.org, ratingmyrecruiters.com and plantillasparacalzado.com.

openhtc.io at least partially shares name servers with other domains, for instance d2b.com, 291hkcido.de, gdtiyupindaozaixianguankan2.net.cn, pinuppoetry.com and reginadorsey.com.

These name servers are commonly used with the name servers stanley.ns.cloudflare.com.

Host names with six IP numbers: rob.ns.cloudflare.com points to: 2606:4700:58::adf5:3b8c, 2803:f800:50::6ca2:c18c, 2a06:98c1:50::ac40:218c, 108.162.193.140, 172.64.33.140 and 173.245.59.140. vida.ns.cloudflare.com points to: 2606:4700:50::adf5:3aec, 2803:f800:50::6ca2:c0ec, 2a06:98c1:50::ac40:20ec, 108.162.192.236, 172.64.32.236 and 173.245.58.236.

Mail Servers

openhtc.io is handled by two mail servers: mail2.rollernet.us and mail.rollernet.us.

openhtc.io uses the same mail server configuration as other domains, such as kwworld.com, mfrastructures.com, svpyxis.net, hohlauto.com and ecobuilthome.ca.

openhtc.io shares mail servers with other domains at least in part, for instance tvdata.nl, cablelabs.de, disolutions.com.au, ns.gutschke.org and wpds.net.

These mail servers are commonly used with aspmx.l.google.com, alt1.aspmx.l.google.com, aspmx2.googlemail.com, aspmx3.googlemail.com, alt2.aspmx.l.google.com, mail.darnt.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IP numbers: mail2.rollernet.us points to 2607:fe70:0:4::a and 208.79.241.2; mail.rollernet.us points to 2607:fe70:0:3::a and 208.79.240.2.

openhtc.io - robtex.com

openhtc.io

io

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`openhtc.io`

`io`