[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Oct 27 22:20:37 UTC 2023
IPv4 R&E Routing Table Report 22:20 GMT Fri 27 Oct, 2023
IPv4 BGP Table (R&E) as seen at ESnet.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/
Analysis Summary
----------------
BGP routing table entries examined: 18521
Prefixes after maximum aggregation (per Origin AS): 10663
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11767
Number of IPv4 prefixes with a valid ROA: 5052
Number of IPv4 prefixes with an invalid ROA: 28
Number of IPv4 prefixes with no ROA: 13441
Total ASes present in the Internet Routing Table: 2736
Prefixes per ASN: 6.77
Origin-only ASes present in the Internet Routing Table: 2371
Origin ASes announcing only one prefix: 1067
Transit ASes present in the Internet Routing Table: 365
Transit-only ASes present in the Internet Routing Table: 66
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.7
Max AS path length visible: 14
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 3
Number of instances of unregistered ASNs: 3
Number of 32-bit ASNs allocated by the RIRs: 42928
Number of 32-bit ASNs visible in the Routing Table: 632
Prefixes from 32-bit ASNs in the Routing Table: 1891
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: 177071616
Equivalent to 10 /8s, 141 /16s and 230 /24s
Percentage of available address space announced: 4.8
Percentage of allocated address space announced: 4.8
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: 2080
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4246
Total APNIC prefixes after maximum aggregation: 2161
APNIC Deaggregation factor: 1.96
Prefixes being announced from the APNIC address blocks: 4245
Unique aggregates announced from the APNIC address blocks: 2432
APNIC Region origin ASes present in the Internet Routing Table: 491
APNIC Prefixes per ASN: 8.65
APNIC Region origin ASes announcing only one prefix: 214
APNIC Region transit ASes present in the Internet Routing Table: 49
Average APNIC Region AS path length visible: 3.8
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 186
Number of APNIC addresses announced to Internet: 35502336
Equivalent to 2 /8s, 29 /16s and 185 /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: 8316
Total ARIN prefixes after maximum aggregation: 4981
ARIN Deaggregation factor: 1.67
Prefixes being announced from the ARIN address blocks: 8325
Unique aggregates announced from the ARIN address blocks: 5541
ARIN Region origin ASes present in the Internet Routing Table: 1300
ARIN Prefixes per ASN: 6.40
ARIN Region origin ASes announcing only one prefix: 473
ARIN Region transit ASes present in the Internet Routing Table: 162
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 211
Number of ARIN addresses announced to Internet: 80542464
Equivalent to 4 /8s, 204 /16s and 251 /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: 3502
Total RIPE prefixes after maximum aggregation: 2817
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3499
Unique aggregates announced from the RIPE address blocks: 2856
RIPE Region origin ASes present in the Internet Routing Table: 672
RIPE Prefixes per ASN: 5.21
RIPE Region origin ASes announcing only one prefix: 297
RIPE Region transit ASes present in the Internet Routing Table: 98
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 144
Number of RIPE addresses announced to Internet: 54323712
Equivalent to 3 /8s, 60 /16s and 234 /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,
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: 1390
Total LACNIC prefixes after maximum aggregation: 531
LACNIC Deaggregation factor: 2.62
Prefixes being announced from the LACNIC address blocks: 1386
Unique aggregates announced from the LACNIC address blocks: 715
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 8.88
LACNIC Region origin ASes announcing only one prefix: 58
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 66
Number of LACNIC addresses announced to Internet: 3976448
Equivalent to 0 /8s, 60 /16s and 173 /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: 1064
Total AfriNIC prefixes after maximum aggregation: 170
AfriNIC Deaggregation factor: 6.26
Prefixes being announced from the AfriNIC address blocks: 1064
Unique aggregates announced from the AfriNIC address blocks: 221
AfriNIC Region origin ASes present in the Internet Routing Table: 49
AfriNIC Prefixes per ASN: 21.71
AfriNIC Region origin ASes announcing only one prefix: 25
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 3.3
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25
Number of AfriNIC addresses announced to Internet: 2660864
Equivalent to 0 /8s, 40 /16s and 154 /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 592 2146 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
1237 188 74 139 KREONET-AS-KR KISTI, KR
7575 177 329 120 AARNET-AS-AP Australian Academic and Re
58647 177 18 2 KAGAWAU-AS Kagawa University, JP
55824 127 19 17 NKN-CORE-NW NKN Core Network, IN
4538 111 2368 68 ERX-CERNET-BKB China Education and Rese
4621 69 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
4762 64 4 1 MAHIDOL-BORDER-AS Mahidol University, T
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
2152 144 507 93 CSUNET-NW, US
18558 141 18 4 NETBLK-RCOEK, US
81 126 473 31 NCREN, US
270 115 329 79 AS270, US
23024 113 7 17 OCDE, US
2920 101 34 7 LACOE, US
6325 88 186 15 ILLINOIS-CENTURY, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 283 1903 249 DFN Verein zur Foerderung eines Deutsch
786 185 1767 182 JANET Jisc Services Limited, GB
8895 133 24 4 ISU Internet Services Unit ISU, SA
559 113 533 105 SWITCH Peering requests: peering at switch
2614 94 27 74 ROEDUNET, RO
1103 93 1246 82 SURFNET-NL SURFnet, The Netherlands, NL
137 82 677 77 ASGARR Consortium GARR, IT
553 73 457 73 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/ESnet/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 209 176 42 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
11340 104 24 48 Red Universitaria Nacional, CL
271640 70 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 48 16 1 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
61468 43 3 14 CEDIA, EC
2715 42 99 32 Fundacao Carlos Chagas Filho de Amparo
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 34 4 3 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 382 319 71 TENET-1, ZA
36914 251 82 3 KENET-AS, KE
327687 166 28 3 RENU, UG
8094 48 48 15 PUKNET, ZA
327700 42 16 1 MoRENet, MZ
3208 32 2 1 ARN, DZ
6879 24 2 9 ENSTINET-, EG
37074 14 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 592 2146 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
2018 382 319 71 TENET-1, ZA
680 283 1903 249 DFN Verein zur Foerderung eines Deutsch
36914 251 82 3 KENET-AS, KE
1916 209 176 42 Rede Nacional de Ensino e Pesquisa, BR
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
1237 188 74 139 KREONET-AS-KR KISTI, KR
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 437 414 CSTNET-AS-AP Computer Network Information Cente
2018 382 311 TENET-1, ZA
36914 251 248 KENET-AS, KE
5786 197 196 UPRENET, PR
58647 177 175 KAGAWAU-AS Kagawa University, JP
1916 209 167 Rede Nacional de Ensino e Pesquisa, BR
327687 166 163 RENU, UG
18558 141 137 NETBLK-RCOEK, US
8895 133 129 ISU Internet Services Unit ISU, SA
55824 127 110 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
22272 UNALLOCATED 206.208.24.0/21 6325 ILLINOIS-CENTURY, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW
134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo
202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0
/13:0 /14:35 /15:122 /16:2026 /17:433 /18:444
/19:586 /20:844 /21:855 /22:1477 /23:1532 /24:10167
/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 240 251 KENET-AS, KE
8895 128 133 ISU Internet Services Unit ISU, SA
23024 52 113 OCDE, US
32440 38 61 LONI, US
327700 38 42 MoRENet, MZ
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 31 52 SEAP-AGE, ES
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:16 6:4 8:5 12:2 14:89
18:43 23:9 24:3 31:7 35:3 38:10
40:1 41:118 42:10 44:6 45:42 46:6
47:1 49:7 50:9 52:1 58:1 59:3
60:5 61:3 62:10 63:37 64:55 65:19
66:56 67:45 68:22 69:18 70:2 71:1
72:7 74:51 76:42 77:9 78:3 79:10
80:12 81:27 82:7 83:6 84:8 85:41
86:1 87:1 89:11 91:43 92:2 93:4
94:4 95:2 97:3 98:2 101:2 102:30
103:210 104:77 107:10 108:8 109:6 114:23
116:5 117:61 119:18 121:11 123:8 124:40
125:4 128:56 129:51 130:87 131:64 132:59
133:152 134:107 136:196 137:131 138:9 139:5
140:41 141:4 142:35 143:22 144:28 145:3
146:131 147:58 148:194 149:12 150:41 151:14
152:131 153:13 154:29 155:63 156:65 157:17
158:35 159:115 160:34 161:19 162:31 163:71
164:13 165:47 166:2 167:15 168:123 169:8
170:92 171:1 172:3 173:8 174:1 175:17
177:6 179:11 180:15 181:1 182:1 184:2
185:49 186:3 187:18 188:13 189:3 190:19
191:13 192:1491 193:290 194:126 195:76 196:202
197:166 198:514 199:286 200:317 201:36 202:574
203:409 204:370 205:131 206:203 207:165 208:76
209:125 210:181 211:13 212:160 213:5 214:8
216:98 217:9 218:22 219:5 220:16 222:2
223:4
End of report
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