🌐 Reverse ASN Lookup

Find all domains hosted on this ASN

Every .dk domain whose website address (A record) is announced by AS4637, with the network's IPv6 and DNSSEC adoption and its observed prefixes. An autonomous system is the routing identity of a hosting company or ISP. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.

📈 Domains over time#

111 days
112332026-07-012026-08-252026-10-19
2 latest0 over 111 days

Active .dk domains whose website address (A record) is announced by AS4637, counted once a day.

🌐 AS4637 at a glance#

Telstra Global

AS4637 is announced by Telstra Global (Hong Kong) and currently hosts 2 .dk domains in our dataset — <0.01% of all scanned .dk domains. Across all our scans we have observed 2 unique IPv4 addresses on this network, and the domains currently sit in 2 IPv4 CIDR blocks covering roughly 41 thousand addresses of IPv4 space.

We have yet to observe any IPv6 (AAAA) hosting on this AS.

The network is part of the .dk zone's infrastructure too: 3 distinct nameservers and 5 distinct mail exchangers serving .dk domains currently resolve to addresses announced by this AS.

On the security side, 1 of the domains hosted here (50.0%) validate as DNSSEC-secure — below the zone-wide average for domains with a web address, 70.5%. See how this AS compares on the ASN statistics page, or drill into the CIDR list below the results.

🛰️ Upstream providers of AS4637#

via ipbot.dk

ASN-TELSTRA-GLOBAL - Telstra Global announces 771 prefixes (666 IPv4, 105 IPv6) and reaches the internet through 10 upstream networks.

UpstreamNamePower
AS6939Hurricane Electric LLC
100.0%
AS1221ASN-TELSTRA - Telstra Limited
77.6%
AS3356Level 3 Parent, LLC
18.4%
AS1299TWELVE99 Arelion Sweden AB
16.0%
AS9002RETN Limited
12.0%
AS3257GTT-BACKBONE GTT Communications Inc.
10.8%
AS6762SEABONE-NET TELECOM ITALIA SPARKLE S.p.A.
8.4%
AS6461Zayo Bandwidth
7.7%
AS13030Init7 (Switzerland) Ltd.
7.5%
AS35280F5 F5 Networks SARL
6.8%

Upstream and prefix data supplied by ipbot.dk; power is relative to the strongest upstream.

🔻 Networks using AS4637 as upstream#

114 networks
NetworkNameDomainsPower
AS1221ASN-TELSTRA - Telstra Limited—
100.0%
AS64049RJIPL-SG - Reliance Jio Infocomm Pte Ltd Singapore—
19.4%
AS20473AS-VULTR - The Constant Company, LLC1,129
10.9%
AS38082IIT-TIG-AS-AP - True International Gateway Co., Ltd.—
8.6%
AS135607INFINIVAN-AS-AP - Infinivan Incorporated—
8.5%
AS45177DEVOLI-AS-AP - Devoli—
7.7%
AS136557HOST-AS-AP - Host Universal Pty Ltd—
7.1%
AS15830Equinix (EMEA) Acquisition Enterprises B.V.58
5.4%
AS10010TOKAI Communications Corporation—
4.5%
AS19551Incapsula Inc542
4.5%
AS19151BBO-1 - BroadbandONE, LLC—
4.4%
AS8966Etisalat-AS EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC—
4.2%
AS47147AS-ANX Anexia Cloud Solutions GmbH—
3.7%
AS8529OMANTEL-AS Zain Omantel International FZ-LLC—
3.6%
AS13030Init7 (Switzerland) Ltd.—
3.5%
AS31027GlobalConnect A/S8,608
3.3%
AS8426Claranet Limited18
3.1%
AS8849MELBICOM-EU-AS Melbikomas UAB—
2.9%
AS55850MERCURYNZ-AS-AP - Mercury NZ Limited—
2.9%
AS2519VECTANT ARTERIA Networks Corporation—
2.9%
AS24961MYLOC-AS WIIT AG220
2.5%
AS8455atom86 BV—
2.4%
AS32787PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.—
2.2%
AS45796UIH-BBCONNECT-AS-AP - UIH / BB Connect—
2.2%
AS20940AKAMAI-ASN1 Akamai International B.V.304
2.1%
AS45629JASTEL-NETWORK-TH-AP JasTel Network International Gateway—
1.9%
AS4775Globe Telecoms—
1.9%
AS4657STARHUB-INTERNET - StarHub Ltd—
1.8%
AS9607BBTower - BroadBand Tower, Inc.—
1.8%
AS18046DONGFONG-TW - DongFong Technology Co. Ltd.—
1.5%
AS55821RADIUSTELECOMS-AS-AP - RADIUS TELECOMS, INC.—
1.5%
AS59796StormWall s.r.o.—
1.4%
AS45147NAPINFO-TRANSIT-AS-AP PT. NAP Info Lintas Nusa—
1.4%
AS10310Yahoo Holdings Inc.—
1.4%
AS17828PNGDATACOLIMITED-AS-PG - PNG DATACO LTD—
1.4%
AS3300BT British Telecommunications Limited—
1.3%
AS16276OVH SAS7,205
1.3%
AS139327UCLOUD-AS-AP - UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED—
1.1%
AS63473HostHatch, LLC—
1.1%
AS9009M247 M247 Europe SRL312
1.0%
AS10111ZEONET-AS-AP - Zeofast Network—
1.0%
AS8781QA-ISP Ooredoo Q.S.C.—
1.0%
AS714APPLE-ENGINEERING - Apple Inc.—
0.9%
AS4651NTPCL-AS-AP - National Telecom Public Company Limited—
0.9%
AS137831SHOPEE-AS-AP - SEA IX—
0.9%
AS18186Nebula Global LLC—
0.9%
AS63927RISE-HK RISE—
0.9%
AS2514InfoSphere - NTT PC Communications, Inc.—
0.8%
AS31122Digiweb ltd—
0.8%
AS17645NTT-SG-AP - ASN - NTT SINGAPORE PTE LTD—
0.8%
AS58653VolvoITJapan - UD Trucks Corporation, Volvo Information Technology Japan—
0.7%
AS10204ARCNET-NTTMSC-MY - Arcnet NTT MSC ISP—
0.7%
AS23352SERVERCENTRAL - DEFT.COM64
0.6%
AS54113Fastly, Inc.3,389
0.6%
AS23855SINGAREN-GIX-AS-AP - Singapore Advanced Research and Education Network—
0.6%
AS138995ANTBOX1-AS-AP - Antbox Networks Limited—
0.6%
AS7979Servers.com, Inc.—
0.5%
AS9658ETPI-IDS-AS-AP - Eastern Telecoms Phils., Inc.—
0.5%
AS11164INTERNET2-I2PX - Internet2—
0.5%
AS9957KINX-AS-KR - KINX—
0.5%
AS139648PACKETSTREAM-AS-AP - PacketStream Korea—
0.4%
AS20115Charter Communications LLC—
0.4%
AS200107KL-EXT Kaspersky Lab Switzerland GmbH—
0.4%
AS32098Transtelco Inc—
0.4%
AS40676Psychz Networks—
0.4%
AS10100UBSGROUPAG-AS-AP - UBS Group AG—
0.4%
AS36692CISCO-UMBRELLA - Cisco OpenDNS, LLC—
0.4%
AS15695Expereo International BV—
0.4%
AS9269HKBN-AS-AP - Hong Kong Broadband Network Ltd.—
0.4%
AS133466BOSCH-NET-AP - Robert Bosch GmbH—
0.4%
AS6327Shaw Communications—
0.4%
AS206264Amarutu Technology Ltd—
0.3%
AS7029Windstream Communications LLC—
0.3%
AS4809CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network—
0.3%
AS44444Forcepoint-Cloud-AS Forcepoint UK Limited—
0.3%
AS132876SYMPHONY-AP-TH - Symphony Communication (Thailand) PCL.—
0.3%
AS62044ZSCALER-EMEA Zscaler Switzerland GmbH—
0.3%
AS31747BlackRock Financial Management, Inc.—
0.3%
AS38040GLOBAL-TRANSIT-TOT-IIG-TH - TOT Public Company Limited—
0.3%
AS19905SECURITYSERVICES - Vercara, LLC43
0.3%
AS16552DIGICERT - Tiggee LLC600
0.2%
AS45187RACKSPACE-AP - Rackspace IT Hosting AS IT Hosting Provider Hong Kong—
0.2%
AS109CISCO SYSTEMS, INC.—
0.2%
AS36007Kamatera, Inc.—
0.2%
AS14127Iland Internet Solutions Corporation—
0.2%
AS21070TotalEnergies SE—
0.2%
AS45352IPSERVERONE-AS-AP - IP ServerOne Solutions Sdn Bhd—
0.2%
AS202053UpCloud Ltd1,729
0.2%
AS19527Google LLC—
0.2%
AS10146FORD-MOTOR-CO-SG-AP - Ford Motor Company—
0.2%
AS23930VITROINC-AS-AP - VITRO INC.—
0.2%
AS400940Railway121
0.2%
AS135158AS-SOFTNET-HK Softnet Limited—
0.2%
AS59253LEASEWEB-APAC-SIN-11 - LEASEWEB SINGAPORE PTE. LTD.—
0.2%
AS12888Amadeus GmbH—
0.1%
AS11404AS-WAVE-1 - Wave Broadband—
0.1%
AS63949AKAMAI-LINODE-AP - Akamai Connected Cloud3,637
0.1%
AS3758SingNet—
0.1%
AS9848SEJONGTELECOM-AS-KR SEJONG NETWORKS—
0.1%
AS63741DCNET-AS-VN - DCNET TELECOM—
0.1%
AS42156GNX B.V.—
0.1%
AS25180Exponential-E Ltd.—
0.1%
AS45530AGODA-AS-AP Agoda Company Pte. Ltd.—
0.1%
AS36351SOFTLAYER - IBM Cloud99
0.1%
AS15224OMNITURE - Adobe Inc.—
0.1%
AS138128SOLNET-ID - PT Solnet Indonesia—
0.0%
AS23767A-STAR-AS-AP - A-STAR—
0.0%
AS5413Wavenet Limited—
0.0%
AS31477Duocast B.V.46
0.0%
AS56308TELIN-NET-SG - TELEKOMUNIKASI INDONESIA INTERNATIONAL, PTE.LTD—
0.0%
AS31655ASN-GammaTelecom Gamma Telecom Holdings Ltd—
0.0%
AS33597Atlantic Metro Communications II, Inc.—
0.0%
AS10094UNN-BN - Unified National Networks—
0.0%
AS142118SGHKB-AS-AP - Societe Generale—
0.0%

Among the networks we hold ipbot.dk routing data for (the ones looked up on this site), so this is a sample of the AS's customers, not all of them.

Found 2 domains matching 4637
DomainIPASNISP / OrgCountry
lumination.dk 146.101.249.107 AS4637 Telstra Global 🇭🇰 Hong Kong
yesstyle.dk 61.14.129.214 AS4637 Telstra Global 🇭🇰 Hong Kong

📡 Known CIDRs#

2 CIDRs
CIDRDomains
61.14.128.0/19 1
146.101.128.0/17 1

🧭 Nameservers in this AS#

3 hosts
HostnameDomains
pri1.dns.uk.psi.net 1
pri2.dns.uk.psi.net 1
pri3.dns.uk.psi.net 1

📮 Mail Exchangers in this AS#

5 hosts
HostnameDomains
psimail1.uk.psi.net 2
mail1.yesstyle.dk 1
mail2.yesstyle.dk 1
mx1.mail.uk.psi.net 1
mx2.mail.uk.psi.net 1
dhd.dk [/] search Domains, Hosts & DNS — .dk zone