156.154.70.1
Owned by Neustar — Sterling, Virginia, US
Public DNS Server ✓ Safe AS19108

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📌 IP Address Details
IP Address156.154.70.1
Owner / OrganizationNeustar
TypePublic DNS Server
Hostnamerdns1.ultradns.net
ASNAS19108
ISPNeustar Security Services
LocationSterling, Virginia, US
Common Ports53 (DNS)
Safe to Connect?✅ Yes
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What Is 156.154.70.1?

156.154.70.1 is a well-known IP address owned and operated by Neustar. It is classified as a Public DNS Server and is primarily used for: Neustar UltraDNS public resolver. A fast and reliable DNS service operated by Neustar, widely used in enterprise environments and as a personal alternative to Google DNS.

The address belongs to Autonomous System AS19108, registered to Neustar Security Services. If you have seen 156.154.70.1 appear in your network logs, firewall rules, or router settings, it is almost certainly legitimate traffic related to Neustar’s services.

Is 156.154.70.1 Safe?

✅ Yes, 156.154.70.1 is safe. This IP address belongs to Neustar, a reputable organization. It is not associated with malicious activity, spam, or known threat actors. Seeing it in your network traffic is normal if you use Neustar’s services.

Who Owns 156.154.70.1?

156.154.70.1 is registered under ASN AS19108 and is allocated to Neustar. The address resolves to the hostname rdns1.ultradns.net and is geographically associated with Sterling, Virginia, US.

IP address ownership data is publicly available through the Regional Internet Registries (RIRs) such as ARIN, RIPE NCC, and APNIC. You can verify ownership of any IP at any time using a WHOIS lookup.

How to Protect Your Own IP Address

Just like 156.154.70.1 is publicly visible and traceable back to Neustar, your personal IP address is visible to every website you visit. Websites, advertisers, and even bad actors can see your approximate location and ISP from your IP alone.

The easiest way to hide your IP is to use a VPN (Virtual Private Network). A VPN replaces your real IP with one of the VPN provider’s servers, making you anonymous online.

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Frequently Asked Questions About 156.154.70.1

Who owns 156.154.70.1?
156.154.70.1 is operated by Neustar (now part of TransUnion). It is the primary server of the UltraDNS public resolver service.
Is Neustar DNS reliable?
Yes. Neustar UltraDNS is a well-established DNS provider used by large enterprises. The public resolver is free and generally fast.
What is the secondary DNS for Neustar?
The secondary Neustar DNS server is 156.154.71.1. Use both for redundancy.

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Last updated: March 28, 2026 • Data sourced from public WHOIS / ARIN / RIPE registries. Report an error

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