Autonomous system
AS10946 ASN-NTF
Unclassified ARIN Non-Profit
Summary
Network Time Foundation
enterprise legacy
ASN-NTF belongs to Network Time Foundation, the US non-profit that stewards the Network Time Protocol reference implementation and related open-source timekeeping projects. It is a very small autonomous system: RIS sees 2 announced IPv4 prefixes covering 1,024 addresses, no IPv6, and 1 observed neighbour.
What it's used for
A single upstream and a thousand addresses is the profile of an organisation that runs its own service infrastructure and buys transit from one provider, rather than one that sells connectivity to anyone else. Network Time Foundation exists to fund and maintain the NTP codebase and the surrounding ecosystem, and the numbering resources here support the foundation's own project infrastructure. No PTRs came back on the handful of addresses sampled, which tells us nothing either way about how the space is delegated, so the routing shape rather than reverse DNS is what carries the description.
Notable
Both announced prefixes sit in the same 104.152.84.0/22, with a /24 announced from inside it. That is a fairly ordinary bit of hygiene, keeping a more-specific route available independently of the covering aggregate.
Interesting
The organisation's importance is wildly out of proportion to its footprint on the routing table. NTP is one of the oldest protocols still in daily use on the internet, and the foundation that maintains it holds fewer addresses than a mid-sized office network.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Fremont Cabal Internet Exchange | Fremont, United States | 206.80.238.63 |
| San Francisco Metropolitan Internet Exchange | San Francisco, United States | 206.197.187.68 |
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS6939 | Hurricane Electric LLC | 128 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10946- Registry name
- ASN-NTF
- Registrant
- Network Time Foundation, Inc.
- Abuse contact
- hostmaster@ns.sol.net
- Registered
- 2020-02-04
- Last changed
- 2020-02-04
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Network Time Foundation, Inc.
- Also known as
- NTP.ORG, the NTP Project
- Network type
- Non-Profit
- Scope
- North America
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
ARIN::AS-10946-NTF- Present at
- 1 exchanges
- Facilities
- 3 facilities
- Website
- http://www.nwtime.org/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS10946
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS10946
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 446 networks and 1,852 prefixes, as published 2026-10-27. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere