Autonomous system
AS13709 CUMULUS-MEDIA-INC
Unclassified ARIN
Summary
Cumulus Media
media enterprise business
Twelve prefixes that tile one contiguous range exactly, announced to a single upstream.
What it's used for
- A radio broadcaster's network. 8,192 addresses across twelve IPv4 prefixes, one observed BGP neighbour, and no IPv6 announced.
Notable
- All twelve prefixes sit inside
216.234and abut with no gaps, covering one contiguous range. - Sizes run from /21 down to /24, including pairs of /24s that sit inside ranges already announced as a /23.
- Every block is netname
CMLS-ATL, an abbreviation of the company plus a city code. 216.234.30.254answers asv10.webstack.cumulusmedia.netand216.234.1.126asgsm7212.cumulusmedia.net.
Interesting
- Twelve announcements over one upstream is the clearest case of routing fragmentation with no benefit attached. Splitting prefixes buys traffic engineering only when there is more than one path, and here there is not. The whole range could travel as one entry.
- The second hostname is a switch model number, so the reverse zone names the hardware. Anyone reading it learns the vendor and the exact model handling that address.
- The first begins with a letter and a number, the usual way to write a network segment, followed by the name of the stack it belongs to. Both names were written for internal use and are public.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS13767 | DataBank Holdings, Ltd. | 944 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 12 prefixes · 8.19K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 12 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS13709- Registry name
- CUMULUS-MEDIA-INC
- Registrant
- Cumulus Media, Inc.
- Abuse contact
- cmls-noc@cumulus.com
- Registered
- 1999-08-03
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 16 with no ROA
- ROAs
- 0 authorising AS13709
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 1 naming AS13709
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 1,852 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