Autonomous system
AS15951 DJUK Dow Jones & Company, Inc.
Unclassified RIPE
Summary
Dow Jones & Company
media business finance
Three eras of one publisher's corporate history, one per netname.
What it's used for
- A financial news publisher's network. Five IPv4 prefixes announced from the United States, no IPv6, one thousand seven hundred and ninety-two addresses, across three observed BGP neighbours.
Notable
- Two blocks carry a netname joining the publisher, a news division with a country code, and a contraction of the word for infrastructure, with an abuse role as the only registrant.
- One carries the publisher and the word for news run together in capitals, with the company itself listed.
- The remaining two are named for a market-data business the publisher once owned, in a five-letter contraction with the word for clients attached, and registered to the two names joined by a hyphen.
- The AS handle is four letters, then a city and the words for data centres, so the routing record names a building rather than a company.
- Fifteen addresses were queried for reverse DNS and none returned a name.
Interesting
- Netnames are effectively permanent: changing one means updating every record that references it, so they accumulate rather than get corrected. Reading them in order gives a company's acquisitions and divisions in the sequence the address space arrived.
- A publisher whose product is prices and headlines has the same shape of network as a bank, for the same reason: the valuable connections are private feeds, not anything routed here.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 1.79K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS15951- Registry name
- DJUK
- Registrant
- DOWJONES-MNT
- Abuse contact
- david.russell@dowjones.com
- Registered
- 1970-01-01
- Last changed
- 2017-11-15
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 67% valid · 4 valid, 2 with no ROA
- ROAs
- 4 authorising AS15951
- ASPA
- no ASPA record
- IRR
- 83% registered · 5 of 6 announcements 1 other origin
- Route objects
- 9 naming AS15951
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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