Shame on you, stupid spammers.. Sh4meful  DMARC Spoof Detection

IP Address: 141.98.10.86

IP address 141.98.10.86 is registered to LT-HOSTBALTIC-10 and geolocates to Lithuania. It first appeared in sh4meful's dataset on July 6, 2026 and was most recently observed on July 10, 2026. Over the observation window, it has failed DMARC alignment 5 times, targeting one sender domain. Its reverse DNS resolves to srv-141-98-10-86.serveroffer.net. Network context: this address sits within LT-HOSTBALTIC-10 (LT-HOSTBALTIC-10), a network sh4meful has observed producing 54 failures across 22 distinct IPs during the same window.

Failure Activity Over Time

Peak activity was observed in the week of July 6, 2026 with 18 failures recorded. Activity in the most recent 30-day window increased sharply compared with the prior period (18 vs 0 failures).

This IP has claimed to send from 1 sender domain monitored by sh4meful. The single targeted domain suggests either a compromised sending source or a spoofing attempt focused on a specific brand.

This page shows DMARC authentication failure data for this IP address. Learn more about this data.

Geolocation Information
Country:
LT Lithuania
Coordinates:
55.4167, 24
WHOIS Information
Network Name:
LT-HOSTBALTIC-10
CIDR:
141.98.10.0/24
Reverse DNS:
srv-141-98-10-86.serveroffer.net
Last updated: 7/7/2026

Analysis

This IP generated DMARC authentication failures across 18 messages in a short window between July 6, 2026 and July 10, 2026. Every message observed from this source failed both SPF and DKIM verification. Receiving mail providers applied a reject disposition, refusing delivery outright.

The reverse DNS record resolves to srv-141-98-10-86.serveroffer.net. Whether this represents legitimate mail infrastructure depends on whether the hostname aligns with the domains this address is claiming to send on behalf of.

Geolocation places the host in Lithuania, on infrastructure operated by LT-HOSTBALTIC-10. Abuse-reporting channels in this jurisdiction are generally responsive, and reports to the network operator can result in timely remediation.

The address is registered to LT-HOSTBALTIC-10 (LT-HOSTBALTIC-10). Enterprise-registered addresses that appear in DMARC failure data are typically either compromised hosts on the organization's network or outbound mail relays that are not properly authorized in the domain's SPF record.

Across the wider LT-HOSTBALTIC-10 network, 22 distinct IPs have been associated with 54 authentication failures over 87 observed messages, spanning 1 country. The failure pattern suggests a mix of abuse sources on this network.

If your domain appears in the From header of mail from this address, treat it as probable spoofing. Verify that your SPF record does not authorize this host, directly or through nested include mechanisms, and that no DKIM selector you publish has been issued to it. If both checks come back clean, the receiver's reject action is doing its job.

Your DMARC policy posture matters more than any IP-level response here. The enforcement action applied to this mail indicates your policy is already providing protection. Maintaining p=reject across all your domains closes the gap for attackers who manage partial alignment. Domains that remain at p=none long-term tend to be impersonated repeatedly, because the cost to the attacker of attempting is effectively zero.

Blocking this individual address has limited durability: an attacker can rotate to another address in the same /24 subnet at effectively zero cost. More durable responses include monitoring aggregate DMARC reports so new sources are visible as they emerge, tightening SPF to remove overly permissive include chains or +all mechanisms, and ensuring DKIM is signing every legitimate outbound stream so alignment failures are unambiguous. The formal abuse contact for LT-HOSTBALTIC-10 is listed in ARIN/RIPE/APNIC WHOIS records, and timely remediation is achievable through that channel.

Network Topology

This address is part of LT-HOSTBALTIC-10 (LT-HOSTBALTIC-10), announced from Lithuania. 22 IPs in this network have been observed in sh4meful's dataset.

Failures Detected from this IP
Showing 1-5 of 5 failures, affecting 18 messages
Date โ–ผ Messages
7/10/2026 4
7/9/2026 2
7/8/2026 6
7/7/2026 4
7/6/2026 2
External Reputation Lookups

Look up this IP in external threat intelligence and reputation databases (opens in new tab):

Nearby IPs

The following IP addresses share the same /24 subnet as 141.98.10.86 and have appeared in sh4meful's dataset. Related activity in nearby addresses often indicates infrastructure operated by a single actor or provider.

  • 141.98.10.132 โ€” 5 failures, first seen 2 years ago, 833 days before this address.
  • 141.98.10.175 โ€” 5 failures, first seen 1 year ago, 417 days before this address.
  • 141.98.10.42 โ€” 5 failures, first seen 2 months ago, 63 days before this address.
  • 141.98.10.61 โ€” 5 failures, first seen 2 years ago, 802 days before this address.
  • 141.98.10.79 โ€” 4 failures, first seen 1 year ago, 709 days before this address.
  • 141.98.10.77 โ€” 3 failures, first seen 2 years ago, 833 days before this address.
  • 141.98.10.68 โ€” 3 failures, first seen 1 year ago, 708 days before this address.
  • 141.98.10.140 โ€” 2 failures, first seen 2 years ago, 852 days before this address.

Recommended Action

If this IP appears in your own DMARC reports, treat it as an unauthorized sender unless you have specifically verified it as a legitimate service you use. Ensure your DMARC policy is at p=quarantine or p=reject to prevent delivery of messages this IP claims to send from your domain. If you're new to DMARC, our complete guide walks through the mechanics.