IPv4 R&E Routing Table Report 20:00 GMT Fri 31 Jan, 2025 IPv4 BGP Table (R&E) as seen at SingAREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/SingAREN/ Analysis Summary ---------------- BGP routing table entries examined: 19619 Prefixes after maximum aggregation (per Origin AS): 10706 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 11833 Number of IPv4 prefixes with a valid ROA: 7556 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 12062 Total ASes present in the Internet Routing Table: 2814 Prefixes per ASN: 6.97 Origin-only ASes present in the Internet Routing Table: 2423 Origin ASes announcing only one prefix: 1090 Transit ASes present in the Internet Routing Table: 391 Transit-only ASes present in the Internet Routing Table: 79 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 18 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 46093 Number of 32-bit ASNs visible in the Routing Table: 674 Prefixes from 32-bit ASNs in the Routing Table: 1803 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 2 Number of addresses announced to Internet: 200777472 Equivalent to 11 /8s, 247 /16s and 159 /24s Percentage of available address space announced: 5.4 Percentage of allocated address space announced: 5.4 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 2371 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4694 Total APNIC prefixes after maximum aggregation: 2263 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4695 Unique aggregates announced from the APNIC address blocks: 2627 APNIC Region origin ASes present in the Internet Routing Table: 565 APNIC Prefixes per ASN: 8.31 APNIC Region origin ASes announcing only one prefix: 238 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 3.5 Max APNIC Region AS path length visible: 11 Number of APNIC region 32-bit ASNs visible in the Routing Table: 210 Number of APNIC addresses announced to Internet: 45562368 Equivalent to 2 /8s, 183 /16s and 58 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-153913 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 8640 Total ARIN prefixes after maximum aggregation: 4843 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 8654 Unique aggregates announced from the ARIN address blocks: 5327 ARIN Region origin ASes present in the Internet Routing Table: 1285 ARIN Prefixes per ASN: 6.73 ARIN Region origin ASes announcing only one prefix: 459 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 5.4 Max ARIN Region AS path length visible: 17 Number of ARIN region 32-bit ASNs visible in the Routing Table: 210 Number of ARIN addresses announced to Internet: 89932800 Equivalent to 5 /8s, 92 /16s and 68 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 3623 Total RIPE prefixes after maximum aggregation: 2882 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3610 Unique aggregates announced from the RIPE address blocks: 2939 RIPE Region origin ASes present in the Internet Routing Table: 671 RIPE Prefixes per ASN: 5.38 RIPE Region origin ASes announcing only one prefix: 304 RIPE Region transit ASes present in the Internet Routing Table: 112 Average RIPE Region AS path length visible: 3.8 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 157 Number of RIPE addresses announced to Internet: 58567168 Equivalent to 3 /8s, 125 /16s and 170 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 1481 Total LACNIC prefixes after maximum aggregation: 540 LACNIC Deaggregation factor: 2.74 Prefixes being announced from the LACNIC address blocks: 1479 Unique aggregates announced from the LACNIC address blocks: 712 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 9.36 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 6.1 Max LACNIC Region AS path length visible: 15 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 66 Number of LACNIC addresses announced to Internet: 4204032 Equivalent to 0 /8s, 64 /16s and 38 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 1180 Total AfriNIC prefixes after maximum aggregation: 177 AfriNIC Deaggregation factor: 6.67 Prefixes being announced from the AfriNIC address blocks: 1179 Unique aggregates announced from the AfriNIC address blocks: 226 AfriNIC Region origin ASes present in the Internet Routing Table: 55 AfriNIC Prefixes per ASN: 21.44 AfriNIC Region origin ASes announcing only one prefix: 33 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 5.1 Max AfriNIC Region AS path length visible: 18 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2508800 Equivalent to 0 /8s, 38 /16s and 72 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 626 2202 463 SINET-AS Research Organization of Informa 7497 450 180 24 CSTNET-AS-AP Computer Network Information 1237 192 74 146 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 297 116 AARNET-AS-AP Australian Academic and Rese 55824 147 19 21 NKN-CORE-NW NKN Core Network, IN 4538 140 4192 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2152 527 507 99 CENIC-2152, US 2920 226 44 49 LACOE, US 668 211 647 178 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 81 129 519 34 NCREN, US 23024 97 7 17 OCDE, US 21976 90 34 16 NJEDGE-NET, US 237 82 541 48 MERIT-AS-14, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 203 1767 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 8895 110 24 5 ISU Internet Services Unit ISU, SA 1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 78 29 68 NIKS, RU Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 236 178 42 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 53 16 1 Red de Interconexion Universitaria, AR 61468 52 5 17 CEDIA, EC 2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 28614 38 2 2 Fundacao Universidade Regional de Blumena 3596 37 8 4 Universidad Autonoma Metropolitana, MX Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 549 82 3 KENET-AS, KE 2018 378 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37182 36 8 1 TERNET, TZ 37215 34 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 626 2202 463 SINET-AS Research Organization of Informa 36914 549 82 3 KENET-AS, KE 2152 527 507 99 CENIC-2152, US 7497 450 180 24 CSTNET-AS-AP Computer Network Information 2018 378 319 71 TENET-1, ZA 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 1916 236 178 42 Rede Nacional de Ensino e Pesquisa, BR 2920 226 44 49 LACOE, US 668 211 647 178 DNIC-AS-00668, US 786 203 1767 183 JANET Jisc Services Limited, GB Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 549 546 KENET-AS, KE 2152 527 428 CENIC-2152, US 7497 450 426 CSTNET-AS-AP Computer Network Information Cente 2018 378 307 TENET-1, ZA 5786 198 197 UPRENET, PR 1916 236 194 Rede Nacional de Ensino e Pesquisa, BR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 226 177 LACOE, US 18558 140 135 NETBLK-RCOEK, US 55824 147 126 NKN-CORE-NW NKN Core Network, IN Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:1 /10:1 /11:1 /12:11 /13:18 /14:33 /15:118 /16:1981 /17:417 /18:459 /19:584 /20:875 /21:892 /22:1506 /23:1616 /24:11106 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 525 549 KENET-AS, KE 8895 107 110 ISU Internet Services Unit ISU, SA 2152 62 527 CENIC-2152, US 23024 36 97 OCDE, US 37182 35 36 TERNET, TZ 3267 34 78 NIKS, RU 32440 33 58 LONI, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 57 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:2 12:1 14:93 23:9 24:3 31:1 35:3 37:8 38:11 40:1 41:254 42:11 44:4 45:51 46:4 47:1 49:11 50:4 52:1 59:19 60:6 61:3 62:8 63:37 64:45 65:5 66:57 67:40 68:13 69:18 70:2 71:1 72:8 74:55 76:38 77:10 78:3 79:10 80:14 81:25 82:7 83:7 84:8 85:46 86:5 87:1 89:10 91:42 92:2 93:14 94:2 95:2 96:5 97:1 98:2 102:13 103:301 104:80 107:2 108:8 109:5 111:21 113:1 114:24 116:9 117:61 118:33 119:23 121:27 122:8 123:8 124:42 125:5 128:59 129:37 130:96 131:66 132:64 133:156 134:109 136:198 137:98 138:58 139:5 140:33 141:3 142:41 143:25 144:27 145:2 146:136 147:60 148:199 149:13 150:70 151:11 152:132 153:14 154:45 155:64 156:130 157:27 158:30 159:117 160:34 161:17 162:24 163:63 164:11 165:49 167:26 168:119 169:7 170:103 171:1 172:2 173:6 175:16 177:6 179:13 180:16 181:1 182:11 184:3 185:49 186:3 187:21 188:14 189:3 190:34 191:13 192:1407 193:315 194:137 195:82 196:147 197:335 198:548 199:278 200:334 201:37 202:642 203:440 204:396 205:178 206:215 207:309 208:67 209:160 210:220 211:3 212:147 213:6 214:9 216:94 217:12 218:23 219:6 220:16 222:2 223:15 End of report