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CIDR
/16 · 65.5K IPs
ASN
GTT Communications Inc.
Reverse DNS
81-188-2-155.sdsl.easynet.be
Last scanned 13 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 v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →

DNS records

Reverse DNS (PTR)
81-188-2-155.sdsl.easynet.be
Forward-confirmed (FCrDNS)
✗ Mismatch
PTR TTL
3600 s
Reverse DNS last checked
2026-09-30 07:50 UTC
Forward DNS last checked
2026-09-30 07:50 UTC

Forward DNS records for 81-188-2-155.sdsl.easynet.be

TypeValuePriorityTTL
A 81.188.2.155 — 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.

Reverse DNS history

How this IP's reverse DNS (PTR) has changed over time, from our scans.

This IP's reverse DNS changes frequently — the timeline below shows the most recent changes.

Reverse-DNS changes between Sep 27, 2026 and Sep 30, 2026 were not recorded; the current PTR is shown from its earliest retained observation.

  1. 81-188-2-155.sdsl.easynet.be — since at least Sep 30, 2026 → present
  2. 81-188-2-155.perm.easynet.be — Sep 27, 2026 → Sep 30, 2026
  3. 81-188-2-155.sdsl.easynet.be — Sep 25, 2026 → Sep 27, 2026
  4. 81-188-2-155.perm.easynet.be — Aug 24, 2026 → Sep 25, 2026
  5. 81-188-2-155.sdsl.easynet.be — Aug 18, 2026 → Aug 24, 2026
  6. 81-188-2-155.perm.easynet.be — Aug 17, 2026 → Aug 18, 2026
  7. 81-188-2-155.sdsl.easynet.be — Jul 1, 2026 → Aug 17, 2026
  8. 81-188-2-155.perm.easynet.be — Jun 28, 2026 → Jul 1, 2026
  9. 81-188-2-155.sdsl.easynet.be — Jun 25, 2026 → Jun 28, 2026
  10. 81-188-2-155.perm.easynet.be — Jun 14, 2026 → Jun 25, 2026

Network Allocation for 81.188.2.155

CIDR range
81.188.0.0/16
IP range (int)
1,371,275,264 — 1,371,340,799
Prefix length
/16
Organization
GTT Communications Inc.
ASN
AS3257
ASN name
GTT Communications Inc.
Location
Grimbergen, Flanders, Belgium
Coordinates
50.966400, 4.374100
Accuracy radius
20 km
Postal code
1851
Regional Internet Registry
RIPE
Allocated
2003-02-18
Data source(s)
maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
Last updated
2026-09-30 05:22:51

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

Announced prefix
Origin AS
Announcement samples
7,313
Last seen
2026-09-30 21:09:56

Frequently Asked Questions

Who owns 81.188.2.155?

81.188.2.155 is allocated to GTT Communications Inc. (AS3257), registered in Grimbergen, Belgium.

Where is 81.188.2.155 located?

The geolocation for 81.188.2.155 maps to Grimbergen, Belgium 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 81.188.2.155 on?

81.188.2.155 belongs to the 81.188.0.0/16 network block announced by AS3257. This range contains 65,536 addresses.

Does 81.188.2.155 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: 2026-09-30 18:57:04 UTC
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