How often is .io telemetry updated on PolScan?

PolScan updates .io telemetry daily to detect newly observed domains, expiring records, and nameserver changes.

.IO (British Indian Ocean Territory) Domain Analytics & DNS Telemetry (2026)

Name: .IO (British Indian Ocean Territory) Domain Analytics & DNS Telemetry
Creator: PolScan
License: https://polscan.com/terms

Indexed Extension & Sub-domain Suffixes

All Suffixes (525,435).io (525,434).gov.io (1)

Interactive Domain Explorer

.io Domain Directory & Filter Lab

Filter by character length, clean letters (no digits or hyphens), keyword pattern, and extension suffix.

Free sample CSV (500) Download filtered CSV (150 rows)

In this sample, 497 of 500 rows have nameserver data and 377 have a detected mail provider.

CSV download includes matching rows 1–150 of 525,434. Pro includes every matching row across downloadable parts.

Keyword / Pattern

Registered After (From)

Registered Before (To)

Length

Characters

Extension Suffix

Showing 1 – 20 of 525,434 matching .io domains Free Preview

.io

Page 1 of 1 (Free Tier)

Domain Name	Extension Suffix	Registered	Length & Type	WHOIS
h264.io .io 4 chars 🔢 Numeric WHOIS →	.io	08-Apr-2019	4 chars 🔢 Numeric	WHOIS →
sentry.io .io 6 chars 🔤 Letters Only WHOIS →	.io	07-Apr-2012	6 chars 🔤 Letters Only	WHOIS →
adobe.io .io 5 chars 🔤 Letters Only WHOIS →	.io	12-Mar-2012	5 chars 🔤 Letters Only	WHOIS →
github.io .io 6 chars 🔤 Letters Only WHOIS →	.io	08-Mar-2013	6 chars 🔤 Letters Only	WHOIS →
astrumu.io .io 7 chars 🔤 Letters Only WHOIS →	.io	04-Jun-2026	7 chars 🔤 Letters Only	WHOIS →
branch.io .io 6 chars 🔤 Letters Only WHOIS →	.io	10-Nov-2011	6 chars 🔤 Letters Only	WHOIS →
grammarly.io .io 9 chars 🔤 Letters Only WHOIS →	.io	10-Feb-2015	9 chars 🔤 Letters Only	WHOIS →
netcraze.io .io 8 chars 🔤 Letters Only WHOIS →	.io	03-Sep-2024	8 chars 🔤 Letters Only	WHOIS →
pushy.io .io 5 chars 🔤 Letters Only WHOIS →	.io	10-Feb-2017	5 chars 🔤 Letters Only	WHOIS →
0xrpc.io .io 5 chars 🔢 Numeric WHOIS →	.io	13-Jan-2025	5 chars 🔢 Numeric	WHOIS →
intercom.io .io 8 chars 🔤 Letters Only WHOIS →	.io	15-Aug-2011	8 chars 🔤 Letters Only	WHOIS →
itch.io .io 4 chars 🔤 Letters Only WHOIS →	.io	27-Oct-2011	4 chars 🔤 Letters Only	WHOIS →
bidr.io .io 4 chars 🔤 Letters Only WHOIS →	.io	30-Aug-2014	4 chars 🔤 Letters Only	WHOIS →
1rx.io .io 3 chars 🔢 Numeric WHOIS →	.io	28-May-2015	3 chars 🔢 Numeric	WHOIS →
wpguardian.io .io 10 chars 🔤 Letters Only WHOIS →	.io	21-Apr-2023	10 chars 🔤 Letters Only	WHOIS →
tubi.io .io 4 chars 🔤 Letters Only WHOIS →	.io	30-Oct-2017	4 chars 🔤 Letters Only	WHOIS →
statuspage.io .io 10 chars 🔤 Letters Only WHOIS →	.io	04-Oct-2012	10 chars 🔤 Letters Only	WHOIS →
agora.io .io 5 chars 🔤 Letters Only WHOIS →	.io	31-May-2013	5 chars 🔤 Letters Only	WHOIS →
liftoff.io .io 7 chars 🔤 Letters Only WHOIS →	.io	30-Oct-2012	7 chars 🔤 Letters Only	WHOIS →
pendo.io .io 5 chars 🔤 Letters Only WHOIS →	.io	17-Jun-2013	5 chars 🔤 Letters Only	WHOIS →

🔒 Free Preview Limit (20 of 525,434 Domains)

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Free browsing shows up to 20 records. PolScan Pro lets you browse all 525,434 matching domains and export reports.

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Frequently Asked Questions about .io Telemetry

How many .io domains has PolScan indexed?

PolScan has indexed 525,435 observed domains under .io. DNS and registry data are available for a subset of those domains.

How can I export the complete .io analytics report?

With active Pro access, you can download hostname reports (.txt) and DNS/mail telemetry CSVs from the workspace.

What country does .io represent and what is its WHOIS server?

The .io extension is the country-code top-level domain (ccTLD) for British Indian Ocean Territory. Public WHOIS lookups can be queried against whois.nic.io.