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CIDR
/19 · 8.2K IPs
ASN
TDC Holding A/S
Reverse DNS
176-21-210-58-cable.dk.customer.tdc.net
Last scanned 20 hr ago
Blocklisted
Checking…
Scanning blocklists

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

86/100
Trusted
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
176-21-210-58-cable.dk.customer.tdc.net
Forward-confirmed (FCrDNS)
✓ Confirmed
PTR TTL
43200 s
Reverse DNS last checked
2026-07-19 16:01 UTC
Forward DNS last checked
2026-07-19 16:01 UTC

Forward DNS records for 176-21-210-58-cable.dk.customer.tdc.net

TypeValuePriorityTTL
A 176.21.210.58 172800s
every IP & sub-domain we've seen under this domain

Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.

Network Allocation for 176.21.210.58

CIDR range
176.21.192.0/19
IP range (int)
2,954,215,424 — 2,954,223,615
Prefix length
/19
Organization
TDC Holding A/S
ASN
AS3292
ASN name
TDC Holding A/S
Location
Holbæk, Zealand, Denmark
Coordinates
55.713900, 11.711500
Accuracy radius
100 km
Postal code
4300
Regional Internet Registry
RIPE
Allocated
2011-05-19
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-07-11 09:23:59

Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.

Announced prefix
Origin AS
Announcement samples
3,564
Last seen
2026-07-19 21:24:50

Frequently Asked Questions

Who owns 176.21.210.58?

176.21.210.58 is allocated to TDC Holding A/S (AS3292), registered in Holbæk, Denmark.

Where is 176.21.210.58 located?

The geolocation for 176.21.210.58 maps to Holbæk, Denmark based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.

What network is 176.21.210.58 on?

176.21.210.58 belongs to the 176.21.192.0/19 network block announced by AS3292. This range contains 8,192 addresses.

Does 176.21.210.58 have a reverse DNS record?

Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.

Neighbors

Other addresses in the same /24.

Related

Last updated: 2026-07-19 10:33:51 UTC
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