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CIDR
/23 · 512 IPs
ASN
H2nexus Ltd
Reverse DNS
underground.company
Last scanned 6 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.

37/100
Caution
How this score is built
Threat-intel listings
⚠ Spamhaus ASN-DROP

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

DNS records

Reverse DNS (PTR)
underground.company
Forward-confirmed (FCrDNS)
Not checked
PTR TTL
1800 s
Reverse DNS last checked
2026-07-19 05:21 UTC
Forward DNS last checked
2026-07-19 05:21 UTC

Forward DNS records for underground.company

TypeValuePriorityTTL
A 144.31.4.204 172800s
A 186.2.171.15 172759s
A 186.2.174.32 172800s
MX mx1.beget.com 10
MX mx1.timeweb.ru 10
MX mx2.beget.com 20
MX mx2.timeweb.ru 20
NS ns1.beget.com
NS ns1.beget.pro
NS ns1.gcorelabs.net
NS ns1.timeweb.ru
NS ns2.beget.com
NS ns2.beget.pro
NS ns2.gcdn.services
NS ns2.timeweb.ru
NS ns3.timeweb.org
NS ns4.timeweb.org
TXT fk-verify=81b36486ca157ec89534410bf3b46331
TXT heleket=4031dbe2
TXT shop-verification-QR2ONN8OmJ
TXT v=DMARC1; p=none; rua=mailto:postmaster@underground.company
TXT v=spf1 include:spf.timeweb.ru ~all
TXT v=spf1 redirect=beget.com
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 144.31.4.204

CIDR range
144.31.4.0/23
IP range (int)
2,417,951,744 — 2,417,952,255
Prefix length
/23
Organization
H2nexus Ltd
ASN
AS215730
ASN name
H2nexus Ltd
Location
Warsaw, Mazovia, Poland
Coordinates
52.229900, 21.009300
Accuracy radius
20 km
Postal code
00-510
Regional Internet Registry
ARIN
Allocated
2025-03-25
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-07-11 09:23:23

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

Announced prefix
Origin AS
Announcement samples
11,485
Last seen
2026-07-19 11:46:05

RIR Ownership History

Atom feed ⇲

Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.

Date Event From To
2026-05-10 New Allocation US

See the full history for 144.31.0.0/21.

Frequently Asked Questions

Who owns 144.31.4.204?

144.31.4.204 is allocated to H2nexus Ltd (AS215730), registered in Warsaw, Poland.

Where is 144.31.4.204 located?

The geolocation for 144.31.4.204 maps to Warsaw, Poland 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 144.31.4.204 on?

144.31.4.204 belongs to the 144.31.4.0/23 network block announced by AS215730. This range contains 512 addresses.

Does 144.31.4.204 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 11:59:12 UTC
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