Home ASN LookupAS398427

AS398427 MARKLEY-NETWORK-SERVICES - Markley Network Services, LLC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

12total

9 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)4,608

Announced (BGP)3,328

IPv6 Addresses

Allocated (RIR)4.9×10²⁷

Announced (BGP)9.2×10²⁶

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

2020-05-26

Announced Prefixes

(BGP)12

Prefix	RPKI	IRR	Last Seen
185.165.212.0/24	Valid	Other IRR	2026-10-11
185.165.213.0/24	Valid	ARIN	2026-10-11
185.165.214.0/24	Valid	ARIN	2026-10-11
185.165.215.0/24	Valid	ARIN	2026-10-11
185.172.188.0/22	Valid	ARIN	2026-10-11
185.172.190.0/24	Valid	-	2026-10-11
185.178.152.0/24	Valid	-	2026-10-11
185.178.153.0/24	Valid	Other IRR	2026-10-11
216.83.172.0/23	Valid	ARINOther IRR	2026-10-11
2602:fd35::/40	Valid	ARIN	2026-10-11

1-10 of 12

1 / 2

Allocated Prefixes

(RIR)8

Prefix	Country	RIR	Status
64.6.46.0/23	🇺🇸 US	ARIN	allocated
65.38.118.0/23	🇺🇸 US	ARIN	allocated
66.179.38.0/23	🇺🇸 US	ARIN	allocated
185.165.212.0/22	🇺🇸 US	ARIN	allocated
185.172.188.0/22	🇺🇸 US	ARIN	allocated
185.178.152.0/23	🇺🇸 US	ARIN	allocated
216.83.172.0/23	🇺🇸 US	ARIN	allocated
2602:fd35::/36	🇺🇸 US	ARIN	allocated

All 12 announced prefixes of AS398427 →

BGP Neighbours

(seen in AS paths)

Upstreams (5)

Networks AS398427 hands its own prefixes to: transit providers, or peers at an exchange.

AS6079RCN5
AS46887Crown Castle Fiber3
AS2914NTT America2
AS174Cogent Communications1
AS11776Breezeline1

Downstreams (16)

Networks whose own prefixes AS398427 passes on: usually its customers.

AS26167Markley Boston7
AS6932EBSCO Publishing5
AS46964The Broad Institute5
AS5724University Of Massachusetts Medical School4
AS19712ZOLL Medical Corporation2
AS32926Massachusetts State Lottery Commission2
AS40444Constant Contact2
AS399313TUFTS ASSOCIATED HEALTH PLANS2
AS2738Shields Health Care Group1
AS11894Service Credit Union1
AS19733Digital Federal Credit Union1
AS31980The Baupost Group1
AS32973Bracebridge Capital1
AS46150Southern New Hampshire University1
AS62983The Massachusetts Port Authority1
AS397424Weiss Asset Management LP1

ASPA

No ASPA

External Links

ARIN Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS398427 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/398427

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/398427" | jq