`nic.io`

	DNSSEC	⚠️ Not signed
	A	75.2.38.108^{🇺🇸 Amazon75.2.32.0/20}
	A	99.83.155.228^{🇺🇸 Amazon99.83.144.0/20}
	NS	`a0.nic.io` ⭐ ⚠️ Not in parent delegation
	NS	`a2.nic.io` ⚠️ Not in parent delegation
	NS	`b0.nic.io` ⚠️ Not in parent delegation
	NS	`c0.nic.io` ⚠️ Not in parent delegation
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`v=spf1 include:_u.nic.io._spf.smart.ondmarc.com ?all`
	TXT	`j0pv08ljpkkstff6jgxcyps8m1hq6f9j`
	TXT	`dx9f1fpvmtwzb34tbymgxg4r99jczg67`
	TXT	`google-site-verification=jbmKV4nd_r0o8cK2x4TlLRQ6eShNaZohqN7j5F7h3pA`
	TXT	`6xyhl93x94lg1sw4xvw1zv8w2ty85054`
	SOA	`a0.nic.io`alerts@afilias.info serial=4167604462

WOT: SAFE (66/100)
rank #313807 globally
rank #2276 in the tld
WOT: SAFE (82/100)
📈 Tranco rank: #718

NIC.IO - The .IO Domain Registry

NIC.IO is the official registry and Network Information Centre for the .io country-code top-level domain (ccTLD). Originally assigned to the British Indian Ocean Territory, the .io extension has evolved into one of the most popular domains for technology companies and startups worldwide, valued for its resemblance to "I/O" (input/output) in computing.

Services

Domain registration on a first-come, first-served basis
WHOIS lookup services
No residency requirements (unlike many ccTLDs)
Global accessibility with DNS infrastructure worldwide

Technical Infrastructure

Type	Details
Nameservers	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io
NS Network	65.22.160-163.17 (IPv4), 2a01:8840:9e-a1::17 (IPv6)
Web Hosting	Amazon Global Accelerator (75.2.38.108, 99.83.155.228)
Email	Google Workspace (aspmx.l.google.com)
DNSSEC	Enabled with DS record
SOA Contact	alerts@afilias.info

History & Ownership

The registry has operated since 1997 and is headquartered in Orpington, United Kingdom. The SOA contact references Afilias, a major domain registry services provider now part of Identity Digital (formed from the merger of Donuts and Afilias). Registrar services are powered by Name.com.

The .io domain has become a staple in startup culture, offering shorter and more memorable alternatives to traditional extensions like .com.

Previously NS for

net.io

org.io

com.io

co.io

gov.io

edu.io

Same first word

ns.crimea.ua

ns.ch.eu.org

ns.ac.th

ns.tools

ns.bt

ns.ha.cn

ns.ac

ns.com.au

ns.me.uk

ns.dog

ns.cr

ns.lutsk.ua

ns.net.ua

ns.world

ns.ro.gov.br

ns.sx

ns.cm

ns.od.ua

ns.dp.ua

ns.gob.cl

ns.si

ns.net.au

ns.gov.my

ns.gq

ns.synology.me

ns.myshopify.com

ns.gl

ns.gifts

ns.ly

ns.gov

ns.ee

ns.kh.ua

ns.net.my

ns.gu

ns.com.py

ns.lviv.ua

ns.lg.ua

ns.nhs.uk

ns.org

ns.rs

ns.cq.cn

ns.uz

ns.org.tw

ns.de

ns.ba

ns.spb.su

ns.net.br

ns.mk

ns.cc

ns.dk

ns.zp.ua

ns.co.nz

ns.biz

ns.tr

ns.ht

ns.gov.mn

ns.is

ns.be

ns.uy

ns.games

ns.ro

ns.ma

ns.life

ns.ac.me

ns.org.hk

ns.nt.ro

ns.msk.ru

ns.gov.ee

ns.net.cn

ns.ao

ns.ru

ns.company

ns.poivron.org

ns.to

ns.io

ns.mk.ua

ns.org.mv

ns.la

ns.ru.net

ns.fi

ns.com.cn

ns.qa

ns.gold

ns.gov.me

ns.sumy.ua

ns.ks.ua

ns.dn.ua

ns.cl

ns.chat

ns.eu.org

ns.com.pk

ns.cx

ns.or.at

ns.org.br

ns.ac.lk

ns.my

ns.fyi

ns.fo

ns.ky

ns.tn

Similar names

sn.to

sn.click

sn.pl

sn.am

sn.is

sn.vc

sn.cn

sn.kz

sn.co

sn.dk

sn.ac.th

sn.ro

sn.ai

sn.com.ua

sn

sn.pub

sn.sg

sn.fyi

sn.md

sn.com.mx

sn.cl

sn.in.th

sn.sumy.ua

sn.net.ua

sn.lv

sn.hu

sn.su

sn.od.ua

ns.lt

sn.com.sv

sn.no

ns.net.id

ns.hepforge.org

DNS History

1 record (0 active, 1 former)

○A193.223.78.1502009-01-11 → 2009-01-11 · 3 obs

● 2009-01-11 13:24:16
○ 2015-09-15 01:05:24
○ 2026-05-09 13:42:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a2.nic.io, b0.nic.io, c0.nic.io, a0.nic.io	-

✅ Authoritative Response

Server:65.22.160.17

NS records: a2.nic.io, b0.nic.io, c0.nic.io, a0.nic.io

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 203ms | Queries: -

📄 Records

Type	Count	Sample Data

ns.nic.io - robtex.com

`ns.nic.io`