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IP WHOIS Details

Query regional network registries recursively to isolate network ranges, ISP owners, allocations, regional servers, and administrative abuse contacts.

Examples:
Diagnostics Tools: DNS Records Email Security DNS Propagation WHOIS Domain SSL Certificate IP Blacklist DNSBL

Multiple Mapped IP Addresses Found (2)

This domain resolves to multiple destination addresses. Click on any alternate IP below to run recursive WHOIS lookup on that node:

38.242.151.238 IPv4 (Active)
2a02:c206:2138:5417::3 IPv6

BGP Network Routing Carrier

BGP Autonomous System (ASN) AS51167
AS51167 (CONTABO - Contabo GmbH, DE) [US]
Internet Service Provider (ISP) Cogent Communications, LLC
Network Name COGENT-A
Registered Organization / Owner Cogent Communications, LLC
Query IP Address 38.242.151.238
Reverse DNS (PTR) auth.md
Country / Region United States (US)
United States (US)
Regional Internet Registry (RIR) ARIN (North America)

Coğrafi Konum Bilgileri

IP adresinin tespit edilen fiziksel lokasyonu ve tescil kayıtları

United States (US) United States (US)
Tespit Edilen Lokasyon United States
Fiziksel Konum Detayları
Şehir —
Bölge —
Posta Kodu —
Kıta North America
Saat Dilimi — (+00:00)
Tescil ve Ağ Bilgileri
Tahsis Durumu DIRECT ALLOCATION
Kayıt Kuruluşu (RIR)
ARIN North America
Kayıtlı Konum 2450 N Street NW, Washington, DC, 20037, United States
Koordinatlar —
Yerel Saat —

Security Reputation Assessment

Threat Risk: 0/100
VPN —
Proxy —
Tor Node CLEAN
Hosting / DC —
Mobile —
Bogon / Private PUBLIC
USOM Blacklist Clean — No Active Block in Turkey
Global DNSBL Blacklist Reputation
Spamhaus Zen
Clean
Barracuda BRBL
Clean
UCEPROTECT L1
Clean

Quick Diagnostics Actions

Ping Traceroute Reverse IP Blacklist
Check Domain WHOIS Information for auth.md

Subnet Diagnostics

IP Range Span
38.0.0.1 → 38.255.255.254
Subnet Block / Range
38.0.0.0/8
CIDR Prefix /8
IP Version IPv4
Subnet Mask 255.0.0.0
Total Hosts 16,777,214
Network Name COGENT-A
Network Type / Status DIRECT ALLOCATION

Registry Owner Contacts

Sponsoring Organization / Owner
Cogent Communications, LLC COGC
noc@cogentco.com
+1-877-875-4311
2450 N Street NW, Washington, DC, 20037, United States
Allocated 16.04.1991
Last Updated 23.09.2025
Abuse / Security Contact
abuse@cogentco.com
+1-877-875-4311
Registry ID / Handle
NET-38-0-0-0-1
Admin Contact
IPALL-ARIN ADMIN
IP Allocation
ipalloc@cogentco.com
+1-877-875-4311
2450 N Street NW, Washington, DC, 20037, United States
Tech Contact
IPALL-ARIN TECH
IP Allocation
ipalloc@cogentco.com
+1-877-875-4311
2450 N Street NW, Washington, DC, 20037, United States