Autonomous system
AS10515 CLT-NIC
Unclassified ARIN
Summary
Verisign Infrastructure & Operations
enterprise hosting legacy
CLT-NIC is registered to Verisign Infrastructure & Operations. Unusually for a famous name, the routing here backs the label up: the announced space carries Verisign's own authoritative DNS servers rather than an office network.
What it's used for
The inventory is small and specific. The AS announces 4 IPv4 prefixes totalling 1,024 addresses (four /24s) and 4 IPv6 /48s, with a single observed neighbour in RIS. Addresses inside these prefixes are the published nstld.com nameservers Verisign operates as a registry and DNS provider: 192.42.173.0/24 and 192.42.177.0/24 hold nstld.com server addresses, and 2001:500:120::/48 and 2001:500:124::/48 hold their IPv6 counterparts.
That explains the otherwise odd shape. A thousand addresses is nothing, but each /24 exists to carry a nameserver address that must be announced as its own route, which is standard practice for authoritative DNS so that a server's prefix can be routed and withdrawn independently of everything else. The value of this AS is in what those few addresses answer, not in how many there are.
Notable
Do not confuse this with the root server or gtld-servers.net networks, which Verisign also runs but from different autonomous systems. The prefixes here come from more than one registry's ranges, which is normal for an operator with globally distributed DNS nodes and says nothing reliable about geography.
Reverse DNS returned nothing on the eight addresses sampled. That is a sample, not a finding, and no conclusion should be drawn from it.
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 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS7342 | VeriSign Infrastructure & Operations | 94 |
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 1 prefixes · 256 addresses IPv6 8 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 9 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS10515- Registry name
- CLT-NIC
- Registrant
- VeriSign Infrastructure & Operations
- Abuse contact
- netadmin@verisign.com
- Registered
- 1997-08-29
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 16 valid, 0 with no ROA
- ROAs
- 159 authorising AS10515
- ASPA
- no ASPA record
- IRR
- 100% registered · 16 of 16 announcements
- Route objects
- 318 naming AS10515
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 1,845 prefixes, as published 2026-10-31. 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