`icechunk.io`

CNAME	`readthedocs.io`
DNSSEC	⚠️ Not signed
A	2606:4700::6810:fd78^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700::6810:fe78^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.16.253.120^{Cloudflare104.16.240.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.16.254.120^{Cloudflare104.16.240.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ivan.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c178^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2178^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivan.ns.cloudflare.com`
		A	108.162.193.120^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	172.64.33.120^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	173.245.59.120^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
NS	`tegan.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tegan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tegan.ns.cloudflare.com`
		A	108.162.192.226^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	172.64.32.226^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	173.245.58.226^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4003:c30::1b^{🇺🇸 Google2607:f8b0:4003::/48}
			PTR	`yutulis-in-f27.1e100.net`
		A	74.125.27.26^{🇺🇸 Google74.125.27.0/24}
			PTR	`yutulis-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4001:c70::1a^{🇺🇸 Google2607:f8b0:4001::/48}
			PTR	`yucbful-in-f26.1e100.net`
		A	192.178.209.26^{🇺🇸 Google192.178.209.0/24}
			PTR	`yucbful-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽¹⁰⁾
		A	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.27^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽¹⁰⁾
		A	2607:f8b0:4023:1015::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f27.1e100.net`
		A	172.253.135.26^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f26.1e100.net`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.16.253.120, 104.16.254.120
		IPv6	2606:4700::6810:fd78, 2606:4700::6810:fe78
SOA	`ivan.ns.cloudflare.com`dns@cloudflare.com serial=2396341883

`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=1773494468

Same first word

icechunk.io

Similar names

uchicken.com

unicheck.ch

unicheck.net

unicheck.de

checkuni.com

unicheck.at

uchenick.ru

unicheck.mx

uchenick.com

unicheck.com.br

unicheck.org

unicheck.eu

chunkice.com

unicheck.com.mx

ucheckin.com

unicheck.com

DNS History

8 records (8 active, 0 former)

●NSdns1.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●NSdns2.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●MXeforward1.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●MXeforward2.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●MXeforward3.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●MXeforward4.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●MXeforward5.registrar-servers.com2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

●CNAMEreadthedocs.io2026-03-19 → 2026-03-24 · 2 obs

● 2026-03-19 22:02:18
● 2026-03-24 00:01:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
icechunk.io	dns2.registrar-servers.com, dns1.registrar-servers.com	-

✅ Authoritative Response

Server:156.154.133.200

NS records: dns2.registrar-servers.com, dns1.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for icechunk.io (unsigned zone)

⏱️ Timing

Total: 537ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	5	`eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10...`
TXT	1	`v=spf1 include:spf.efwd.registrar-server`
CNAME	1	`readthedocs.io`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

Analysis

IP Addresses

icechunk.io maps to four IP numbers: 2606:4700::6810:fd78, 2606:4700::6810:fe78, 104.16.253.120 and 104.16.254.120.

Other host names such as solidity-cn.readthedocs.io, cpu-theo-socket.readthedocs.io, bindtuning-calendar-web-part.readthedocs.io, veit-schiele.de and ella.readthedocs.io share IPs with icechunk.io.

Name Servers

Two name servers ivan.ns.cloudflare.com and tegan.ns.cloudflare.com handle the delegation for icechunk.io.

icechunk.io shares the same name server setup as other domains, for example icjm.mu, readthedocs.org, rtfd.org, readthedocs.io and beauvallon.mu.

icechunk.io at least partially shares name servers with other domains, for example purevision.be, lostpedia.org, nanyudu.cn, boopis.com and divitae.es.