
21700 NEPTUNE-NETWORKS, US
Adjacency: 33 Upstream: 3 Downstream: 30
Upstream Adjacent AS list
AS6939 HURRICANE, US
AS174 COGENT-174, US
AS3257 GTT-BACKBONE GTT, US
Downstream Adjacent AS list
AS57883 NITAET NITAET LLC, UA
AS12654 RIPE-NCC-RIS-AS Reseaux IP Europeens Network Coordination Centre RIPE NCC, NL
AS152848 ASDFHK-AS-AP asdf.hk, HK
AS13849 BLOCKINETIC, US
AS153039 PRONET-AS-AP Protected Networks, US
AS399992 KJTDNET, US
AS400550 SM-AS, US
AS46983 CL-ASN-01, US
AS402164 --No Registry Entry--
AS15257 NBT-LABS, US
AS17138 MPSP-ENGINEERING, US
AS20438 -Reserved AS-, ZZ
AS19949 FNFISP, US
AS206208 AVATELTELECOM-ASN, ES
AS35866 SILVER-CHIP, US
AS36072 12COMMAS, US
AS211544 UNLABELED, US
AS205956 LPNET, FR
AS10779 AS10779, US
AS400490 TWO-BIT-HACKS, US
AS400967 ASSUREDNET-ASN1, US
AS400312 KHITOMER-NETWORKS, US
AS63183 YTHING-NET-1, US
AS53343 SCN, US
AS961 ACHIEVE-, US
AS63229 NOCTURNAL, US
AS401363 LYNCROSS, US
AS401227 JOULEWORKS-MA, US
AS398987 NS-GLOBAL, US
AS54098 LIONLINK-NETWORKS, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 19798 AS21700 ORG+TRN Originate: 3072 /20.42 Transit: 15104 /18.12 NEPTUNE-NETWORKS, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 36066 AS21700 NEPTUNE-NETWORKS, US 8 0 0 8 0 0.00% Prefix AS Path Aggregation Suggestion 23.157.160.0/24 3257 21700 157.254.142.0/24 3257 21700 159.148.114.0/24 3257 21700 172.82.22.0/23 3257 21700 192.109.165.0/24 3257 21700 209.151.100.0/22 3257 21700 216.74.121.0/24 3257 21700 216.126.57.0/24 3257 21700
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21700 27 More Specifics 32 Total Advertisements NEPTUNE-NETWORKS, US
62.138.68.0/22 62.138.64.0/18
62.138.76.0/22 62.138.64.0/18
69.7.64.0/24 69.7.64.0/21
69.7.65.0/24 69.7.64.0/21
85.153.100.0/22 85.153.0.0/17
122.8.28.0/22 122.8.0.0/17
122.8.40.0/22 122.8.0.0/17
122.8.44.0/22 122.8.0.0/17
122.8.48.0/22 122.8.0.0/17
122.8.56.0/22 122.8.0.0/17
122.8.64.0/22 122.8.0.0/17
122.8.72.0/22 122.8.0.0/17
122.8.80.0/22 122.8.0.0/17
122.8.92.0/22 122.8.0.0/17
122.8.96.0/22 122.8.0.0/17
122.8.100.0/22 122.8.0.0/17
122.8.104.0/22 122.8.0.0/17
122.8.108.0/22 122.8.0.0/17
151.106.80.0/20 151.106.64.0/19
159.148.114.0/24 159.148.0.0/16
159.148.125.0/24 159.148.0.0/16
159.148.148.0/24 159.148.0.0/16
192.101.66.0/24 192.101.64.0/21
194.195.16.0/20 194.195.0.0/18
194.195.48.0/20 194.195.0.0/18
213.176.72.0/22 213.176.64.0/18
213.176.92.0/22 213.176.64.0/18
141.140.28.0/22 141.140.0.0/19
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 62.138.76.0/22 Announced
+ 69.7.64.0/24 Announced
+ 69.7.65.0/24 Announced
+ 69.7.78.0/24 Announced
+ 85.153.100.0/22 Announced
+ 122.8.44.0/22 Announced
+ 122.8.48.0/22 Announced
+ 122.8.56.0/22 Announced
+ 122.8.64.0/22 Announced
+ 122.8.72.0/22 Announced
+ 122.8.80.0/22 Announced
+ 122.8.92.0/22 Announced
+ 122.8.100.0/22 Announced
+ 122.8.104.0/22 Announced
+ 159.148.148.0/24 Announced
+ 192.101.66.0/24 Announced
+ 194.233.240.0/20 Announced
- 141.140.28.0/22 Withdrawn
whois: 402549
IANA has recorded AS21700 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21700\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
ASNumber: 21700
ASName: NEPTUNE-NETWORKS
ASHandle: AS21700
RegDate: 2020-12-04
Updated: 2020-12-04
Ref: https://rdap.arin.net/registry/autnum/21700
OrgName: Neptune Networks, LLC
OrgId: NNL-66
Address: PO Box 220284
City: Brooklyn
StateProv: NY
PostalCode: 11222
Country: US
RegDate: 2020-06-04
Updated: 2020-08-05
Ref: https://rdap.arin.net/registry/entity/NNL-66
OrgNOCHandle: NOC32887-ARIN
OrgNOCName: noc
OrgNOCPhone: +1-860-373-0060
OrgNOCEmail: noc@neptunenetworks.com
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC32887-ARIN
OrgTechHandle: NOC32887-ARIN
OrgTechName: noc
OrgTechPhone: +1-860-373-0060
OrgTechEmail: noc@neptunenetworks.com
OrgTechRef: https://rdap.arin.net/registry/entity/NOC32887-ARIN
OrgAbuseHandle: ABUSE7300-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-860-373-0060
OrgAbuseEmail: abuse@neptunenetworks.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE7300-ARIN
OrgDNSHandle: NOC32887-ARIN
OrgDNSName: noc
OrgDNSPhone: +1-860-373-0060
OrgDNSEmail: noc@neptunenetworks.com
OrgDNSRef: https://rdap.arin.net/registry/entity/NOC32887-ARIN
OrgRoutingHandle: NOC32887-ARIN
OrgRoutingName: noc
OrgRoutingPhone: +1-860-373-0060
OrgRoutingEmail: noc@neptunenetworks.com
OrgRoutingRef: https://rdap.arin.net/registry/entity/NOC32887-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#