{"classifier_version":"1.4.0","documentation":"https://rirtracker.com/api/","disclaimer":"This site independently analyzes publicly available Internet number-resource records. It is not affiliated with or endorsed by ARIN, the RIPE NCC, APNIC, LACNIC, AFRINIC, the Number Resource Organization (NRO), or any other Regional Internet Registry. Classifications and hold-expiration dates are evidence-based interpretations and do not constitute confirmation that a resource is available for issuance or transfer.","resource":"161.156.0.0/16","resource_type":"ipv4","page":"https://rirtracker.com/ip/161.156.0.0-161.156.255.255/","statistics_now":{"registry":"RIPE NCC","status":"assigned (dated 1992-06-05)"},"current_holder":{"rir":"RIPE NCC","org":"SoftLayer Technologies, Inc.","how":"The RIPE NCC's latest statistics and the latest transfer record"},"rdap_snapshots":[],"transfers":[{"id":52806,"date":"2017-01-12T19:00:00Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":null,"recipient_org":"SoftLayer Technologies, Inc.","range":"161.156.0.0/16","log":"RIPE NCC"},{"id":8548,"date":"2017-01-12T17:11:25Z","type":"RESOURCE_TRANSFER","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_org":"V.C. Summer Nuclear Station","recipient_org":"SoftLayer Technologies, Inc.","range":"161.156.0.0/16","log":"ARIN"}],"events":[{"event_id":"97ea1401743c5bc8","registry":"ARIN","report_date":"2017-01-12","source":"statistics","raw_action":"NOT_IN_ARIN_ISSUED","raw_line":null,"resource_type":"ipv4","resource":"161.156.0.0/16","start":"161.156.0.0","end":"161.156.255.255","classification":"INTER_RIR_TRANSFER_OUT","classification_label":"Inter-RIR transfer out of ARIN","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":"V.C. Summer Nuclear Station","recipient_organization":"SoftLayer Technologies, Inc.","inventory_effect":"Transferred out of ARIN administration; not offered to ARIN applicants","inventory_effect_code":"TRANSFER_OUT","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:39+00:00","page":"https://rirtracker.com/ip/161.156.0.0-161.156.255.255/#e-97ea1401743c5bc8","report_page":"https://rirtracker.com/arin/reports/2017-01-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.156.0.0-161.156.255.255.json","observed":"161.156.0.0/16 assigned on 2017-01-12, not listed on 2017-01-13","same_transfer_as":"2514385047e339e2","explanation":"ARIN's transfer log records a transfer from V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 17:11 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants.","evidence":[{"type":"statistics_diff","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170113.gz","retrieved_at":"2026-10-12T21:22:09+00:00","summary":"Not listed in ARIN-Issued; found by comparing ARIN's daily statistics: 161.156.0.0/16 assigned on 2017-01-12, not listed on 2017-01-13"},{"type":"transfer","url":"https://ftp.arin.net/pub/stats/arin/transfers/transfers_latest.json","retrieved_at":"2026-10-13T13:57:20+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2017-01-12 17:11 UTC, V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC); resources moved: 161.156.0.0/16"},{"type":"delegated_before","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170111.gz","retrieved_at":"2026-10-12T21:22:04+00:00","summary":"ARIN delegated statistics 2017-01-11 (produced 2017-01-11T06:10:50+00:00), before the report: assigned (dated 1992-12-21)"},{"type":"delegated_after","url":"https://ftp.arin.net/pub/stats/arin/archive/2017/delegated-arin-extended-20170113.gz","retrieved_at":"2026-10-12T21:22:09+00:00","summary":"ARIN delegated statistics 2017-01-13 (produced 2017-01-13T06:08:44+00:00), after the report: not listed"}]},{"event_id":"2514385047e339e2","registry":"RIPE NCC","report_date":"2017-01-12","source":"transfers","raw_action":"TRANSFER","raw_line":null,"resource_type":"ipv4","resource":"161.156.0.0/16","start":"161.156.0.0","end":"161.156.255.255","classification":"INTER_RIR_TRANSFER_IN","classification_label":"Inter-RIR transfer into the RIPE NCC","confidence":"CONFIRMED","source_rir":"ARIN","recipient_rir":"RIPE NCC","source_organization":null,"recipient_organization":"SoftLayer Technologies, Inc.","inventory_effect":"Transferred into RIPE NCC administration; not a new issuance","inventory_effect_code":"TRANSFER_IN","provisional":false,"classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:16+00:00","page":"https://rirtracker.com/ip/161.156.0.0-161.156.255.255/#e-2514385047e339e2","report_page":"https://rirtracker.com/ripe/reports/2017-01-12/","evidence_url":"https://rirtracker.com/api/v1/resources/ip/161.156.0.0-161.156.255.255.json","observed":"Transfer: (no name) (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC)","same_transfer_as":"97ea1401743c5bc8","explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance.","evidence":[{"type":"transfer","url":"https://ftp.ripe.net/pub/stats/ripencc/transfers/transfers_latest.json","retrieved_at":"2026-10-13T21:49:37+00:00","summary":"Transfer log: RESOURCE_TRANSFER on 2017-01-12 19:00 UTC, (no name) (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC); resources moved: 161.156.0.0/16"},{"type":"delegated_before","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170111.bz2","retrieved_at":"2026-10-12T21:11:51+00:00","summary":"RIPE NCC delegated statistics 2017-01-11 (produced 2017-01-11T22:59:59+00:00), before the change: not listed"},{"type":"delegated_after","url":"https://ftp.ripe.net/pub/stats/ripencc/2017/delegated-ripencc-extended-20170112.bz2","retrieved_at":"2026-10-12T21:11:54+00:00","summary":"RIPE NCC delegated statistics 2017-01-12 (produced 2017-01-12T22:59:59+00:00), after the change: assigned (dated 1992-06-05)"}]}],"classification_history":{"97ea1401743c5bc8":[{"raw_change_id":328204,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T05:08:37+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 17:11 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":328204,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:15:04+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 17:11 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":328204,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:58:33+00:00","current":0,"public_explanation":"ARIN's transfer log records a transfer from V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 17:11 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."},{"raw_change_id":328204,"classification_code":"INTER_RIR_TRANSFER_OUT","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-14T00:02:39+00:00","current":1,"public_explanation":"ARIN's transfer log records a transfer from V.C. Summer Nuclear Station (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 17:11 UTC: it left ARIN for the RIPE NCC. ARIN-Issued didn't list this change; it is not a new allocation and is not offered to ARIN applicants."}],"2514385047e339e2":[{"raw_change_id":51944,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.0","classified_at":"2026-10-13T02:42:30+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":51944,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.1","classified_at":"2026-10-13T08:02:25+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":51944,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.3.2","classified_at":"2026-10-13T14:44:39+00:00","current":0,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."},{"raw_change_id":51944,"classification_code":"INTER_RIR_TRANSFER_IN","confidence":"CONFIRMED","classifier_version":"1.4.0","classified_at":"2026-10-13T23:47:16+00:00","current":1,"public_explanation":"The RIPE NCC's transfer log records a transfer from an unnamed organization (ARIN) to SoftLayer Technologies, Inc. (RIPE NCC) on 2017-01-12 19:00 UTC: it came to the RIPE NCC from ARIN. It was already issued by another registry, so this is not a new issuance."}]},"arin_statistics_now":{"status":"not listed"}}