IPv4 R&E Routing Table Report 20:00 GMT Mon 08 May, 2023 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: 18912 Prefixes after maximum aggregation (per Origin AS): 10666 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 11866 Number of IPv4 prefixes with a valid ROA: 4685 Number of IPv4 prefixes with an invalid ROA: 12 Number of IPv4 prefixes with no ROA: 14215 Total ASes present in the Internet Routing Table: 2811 Prefixes per ASN: 6.73 Origin-only ASes present in the Internet Routing Table: 2420 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: 74 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 5.1 Max AS path length visible: 21 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 41809 Number of 32-bit ASNs visible in the Routing Table: 658 Prefixes from 32-bit ASNs in the Routing Table: 1856 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: 204281344 Equivalent to 12 /8s, 45 /16s and 22 /24s Percentage of available address space announced: 5.5 Percentage of allocated address space announced: 5.5 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: 2092 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4680 Total APNIC prefixes after maximum aggregation: 2313 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4682 Unique aggregates announced from the APNIC address blocks: 2634 APNIC Region origin ASes present in the Internet Routing Table: 581 APNIC Prefixes per ASN: 8.06 APNIC Region origin ASes announcing only one prefix: 249 APNIC Region transit ASes present in the Internet Routing Table: 62 Average APNIC Region AS path length visible: 3.7 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 225 Number of APNIC addresses announced to Internet: 45814272 Equivalent to 2 /8s, 187 /16s and 18 /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, 131072-151865 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: 8151 Total ARIN prefixes after maximum aggregation: 4712 ARIN Deaggregation factor: 1.73 Prefixes being announced from the ARIN address blocks: 8166 Unique aggregates announced from the ARIN address blocks: 5260 ARIN Region origin ASes present in the Internet Routing Table: 1259 ARIN Prefixes per ASN: 6.49 ARIN Region origin ASes announcing only one prefix: 451 ARIN Region transit ASes present in the Internet Routing Table: 167 Average ARIN Region AS path length visible: 6.1 Max ARIN Region AS path length visible: 21 Number of ARIN region 32-bit ASNs visible in the Routing Table: 196 Number of ARIN addresses announced to Internet: 93760768 Equivalent to 5 /8s, 150 /16s and 173 /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, 393216-401308 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, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 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: 3602 Total RIPE prefixes after maximum aggregation: 2869 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3591 Unique aggregates announced from the RIPE address blocks: 2897 RIPE Region origin ASes present in the Internet Routing Table: 684 RIPE Prefixes per ASN: 5.25 RIPE Region origin ASes announcing only one prefix: 305 RIPE Region transit ASes present in the Internet Routing Table: 108 Average RIPE Region AS path length visible: 3.9 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 144 Number of RIPE addresses announced to Internet: 58011648 Equivalent to 3 /8s, 117 /16s and 48 /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 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 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: 1467 Total LACNIC prefixes after maximum aggregation: 559 LACNIC Deaggregation factor: 2.62 Prefixes being announced from the LACNIC address blocks: 1464 Unique aggregates announced from the LACNIC address blocks: 779 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 9.32 LACNIC Region origin ASes announcing only one prefix: 59 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 7.0 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4006400 Equivalent to 0 /8s, 61 /16s and 34 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + 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: 1008 Total AfriNIC prefixes after maximum aggregation: 209 AfriNIC Deaggregation factor: 4.82 Prefixes being announced from the AfriNIC address blocks: 1007 Unique aggregates announced from the AfriNIC address blocks: 294 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 19.00 AfriNIC Region origin ASes announcing only one prefix: 26 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.7 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 29 Number of AfriNIC addresses announced to Internet: 2687488 Equivalent to 0 /8s, 41 /16s and 2 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 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 595 2154 465 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 1237 189 74 139 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 119 18 12 NKN-CORE-NW NKN Core Network, IN 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 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 248 507 94 CSUNET-NW, US 668 215 620 178 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18558 134 18 4 NETBLK-RCOEK, US 81 129 521 32 NCREN, US 23024 113 7 17 OCDE, US 2920 107 34 7 LACOE, US 32531 90 6 60 FORDHAM-UNIVERSITY, US 21976 85 51 18 NJEDGE-NET, 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 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 8895 137 24 5 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 1103 95 1518 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 74 465 74 BELWUE BelWue-Koordination, DE 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 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 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 103 24 47 Red Universitaria Nacional, CL 1251 59 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 45 16 1 Red de Interconexion Universitaria, AR 61468 42 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 28571 37 40 18 UNIVERSIDADE DE SAO PAULO, BR 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 2018 382 319 72 TENET-1, ZA 36914 247 82 3 KENET-AS, KE 2561 67 4 34 EUN, EG 327687 59 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 33 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, 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 595 2154 465 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 2018 382 319 72 TENET-1, ZA 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 2152 248 507 94 CSUNET-NW, US 36914 247 82 3 KENET-AS, KE 1916 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 668 215 620 178 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 434 410 CSTNET-AS-AP Computer Network Information Cente 2018 382 310 TENET-1, ZA 36914 247 244 KENET-AS, KE 5786 198 197 UPRENET, PR 1916 223 180 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 2152 248 154 CSUNET-NW, US 8895 137 132 ISU Internet Services Unit ISU, SA 18558 134 130 NETBLK-RCOEK, US 55824 119 107 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 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US 18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/SingAREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 11537 INTERNET2-RESEARCH-EDU, US 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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 /10:2 /11:1 /12:10 /13:18 /14:33 /15:122 /16:1993 /17:410 /18:445 /19:571 /20:880 /21:875 /22:1514 /23:1587 /24:10446 /25:0 /26:0 /27:1 /28:3 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 36914 234 247 KENET-AS, KE 8895 132 137 ISU Internet Services Unit ISU, SA 23024 52 113 OCDE, US 32440 37 59 LONI, US 18632 34 66 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 25977 30 44 HCCS, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 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 14:89 23:7 24:3 31:7 35:6 38:9 40:1 41:106 42:10 44:5 45:40 46:5 47:1 49:6 50:4 52:1 58:1 59:19 60:4 61:3 62:11 63:37 64:58 65:5 66:48 67:43 68:8 69:20 70:2 71:1 72:7 74:50 76:41 77:9 78:3 79:10 80:17 81:26 82:7 83:6 84:11 85:42 86:10 87:1 89:10 91:49 92:2 93:4 94:4 95:2 96:5 97:2 98:2 101:6 102:17 103:308 104:76 107:16 108:10 109:10 110:2 111:16 114:23 116:6 117:61 118:32 119:21 121:29 122:8 123:8 124:39 125:4 128:87 129:41 130:87 131:59 132:52 133:157 134:102 136:198 137:88 138:9 139:6 140:49 141:1 142:39 143:29 144:26 145:2 146:130 147:57 148:193 149:12 150:130 151:10 152:144 153:14 154:31 155:55 156:67 157:35 158:38 159:115 160:27 161:21 162:26 163:75 164:10 165:51 166:1 167:16 168:124 169:7 170:79 171:1 172:3 173:7 175:31 176:8 177:9 179:10 180:15 181:1 182:1 184:3 185:53 186:3 187:17 188:13 189:3 190:18 191:36 192:1350 193:346 194:145 195:108 196:170 197:153 198:526 199:280 200:312 201:38 202:645 203:423 204:361 205:138 206:195 207:189 208:72 209:131 210:186 211:17 212:169 213:5 214:8 216:87 217:10 218:22 219:6 220:17 222:5 223:4 End of report