IPv4 R&E Routing Table Report 20:00 GMT Tue 28 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: 19610 Prefixes after maximum aggregation (per Origin AS): 10701 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 11816 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: 12053 Total ASes present in the Internet Routing Table: 2814 Prefixes per ASN: 6.97 Origin-only ASes present in the Internet Routing Table: 2424 Origin ASes announcing only one prefix: 1088 Transit ASes present in the Internet Routing Table: 390 Transit-only ASes present in the Internet Routing Table: 81 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: 46077 Number of 32-bit ASNs visible in the Routing Table: 672 Prefixes from 32-bit ASNs in the Routing Table: 1799 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: 200778496 Equivalent to 11 /8s, 247 /16s and 163 /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: 2392 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4680 Total APNIC prefixes after maximum aggregation: 2259 APNIC Deaggregation factor: 2.07 Prefixes being announced from the APNIC address blocks: 4681 Unique aggregates announced from the APNIC address blocks: 2624 APNIC Region origin ASes present in the Internet Routing Table: 564 APNIC Prefixes per ASN: 8.30 APNIC Region origin ASes announcing only one prefix: 238 APNIC Region transit ASes present in the Internet Routing Table: 60 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: 208 Number of APNIC addresses announced to Internet: 45561344 Equivalent to 2 /8s, 183 /16s and 54 /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: 8641 Total ARIN prefixes after maximum aggregation: 4846 ARIN Deaggregation factor: 1.78 Prefixes being announced from the ARIN address blocks: 8654 Unique aggregates announced from the ARIN address blocks: 5325 ARIN Region origin ASes present in the Internet Routing Table: 1286 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: 161 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: 211 Number of ARIN addresses announced to Internet: 89932288 Equivalent to 5 /8s, 92 /16s and 66 /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: 3629 Total RIPE prefixes after maximum aggregation: 2881 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3616 Unique aggregates announced from the RIPE address blocks: 2928 RIPE Region origin ASes present in the Internet Routing Table: 671 RIPE Prefixes per ASN: 5.39 RIPE Region origin ASes announcing only one prefix: 303 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: 156 Number of RIPE addresses announced to Internet: 58574080 Equivalent to 3 /8s, 125 /16s and 197 /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: 1480 Total LACNIC prefixes after maximum aggregation: 538 LACNIC Deaggregation factor: 2.75 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: 157 LACNIC Prefixes per ASN: 9.42 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: 4200192 Equivalent to 0 /8s, 64 /16s and 23 /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: 1179 Total AfriNIC prefixes after maximum aggregation: 176 AfriNIC Deaggregation factor: 6.70 Prefixes being announced from the AfriNIC address blocks: 1178 Unique aggregates announced from the AfriNIC address blocks: 225 AfriNIC Region origin ASes present in the Internet Routing Table: 54 AfriNIC Prefixes per ASN: 21.81 AfriNIC Region origin ASes announcing only one prefix: 32 AfriNIC Region transit ASes present in the Internet Routing Table: 10 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: 2508288 Equivalent to 0 /8s, 38 /16s and 70 /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 172 297 115 AARNET-AS-AP Australian Academic and Rese 55824 146 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 2697 59 4 34 ERX-ERNET-AS Education and Research Netwo 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 525 507 99 CENIC-2152, US 2920 226 44 49 LACOE, US 668 211 647 178 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 140 18 5 NETBLK-RCOEK, US 81 129 519 34 NCREN, US 23024 99 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 8895 131 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 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 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 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 525 507 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 525 426 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 8895 131 126 ISU Internet Services Unit ISU, SA 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 /17:416 /18:459 /19:584 /20:876 /21:897 /22:1508 /23:1621 /24:11085 /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 126 131 ISU Internet Services Unit ISU, SA 2152 62 525 CENIC-2152, US 23024 38 99 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 14:92 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 67:41 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 85:45 86:5 87:1 89:10 91:42 92:2 93:14 94:2 95:2 96:5 97:1 98:2 102:13 103:301 104:80 107:2 108:8 109:5 111:21 113:1 114:24 116:9 117:61 118:33 119:23 121:27 122:8 123:8 124:42 125:5 128:59 129:37 130:96 131:66 132:64 133:156 134:109 136:198 137:98 138:58 139:5 140:33 141:3 142:41 143:25 144:27 145:2 146:136 147:60 148:199 149:13 150:70 151:11 152:132 153:14 154:45 155:64 156:130 157:27 158:26 159:117 160:34 161:17 162:24 163:63 164:11 165:49 167:26 168:119 169:7 170:103 171:1 172:2 173:6 175:16 177:6 179:13 180:16 181:1 182:11 184:2 185:50 186:3 187:22 188:14 189:3 190:34 191:13 192:1406 193:289 194:136 195:82 196:147 197:334 198:546 199:277 200:334 201:37 202:644 203:431 204:396 205:178 206:215 207:312 208:67 209:162 210:219 211:3 212:165 213:6 214:9 216:94 217:12 218:23 219:6 220:16 222:2 223:15 End of report