# 2001:500:1::53 — IP Intelligence Summary

2001:500:1::53 is an IPv6 address operated by U.S. Army Research Laboratory (AS1508), geolocated to Calgary, United States. It is known as H Root DNS Server (IPv6). Its reverse DNS name is h.root-servers.net. As of November 7, 2026, IPDebrief rates it Low Risk (0/100); no anonymizing service was detected.

- Canonical page: https://ipdebrief.com/2001:500:1::53
- Last updated: 2026-11-07

## Ownership

- Organization: U.S. Army Research Laboratory
- Network name: H-ROOT
- Allocated block: —
- ASN: AS1508 (https://ipdebrief.com/asn/1508)
- Regional registry: ARIN

## Location

- City: Calgary
- Region: AB
- Country: United States
- Time zone: —

## Network classification

- Infrastructure type: —
- Datacenter / hosting: no
- Residential: no
- Mobile: no
- Anycast: no
- Tor exit node: no
- VPN: no
- Proxy: no

## Risk assessment

- Assessment: Low Risk (0/100)
- Blocklist listings: 0
- Suspicious activity indicators: no
- Spam source: no

## Reverse DNS

- h.root-servers.net
- Forward-confirmed: yes

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Source: IPDebrief, "2001:500:1::53 IP intelligence", https://ipdebrief.com/2001:500:1::53, updated 2026-11-07. Assessments are probabilistic.