[REN-BGP-stats-all] IPv4 R&E Routing Table Report - CERNET (R&E) view
REN Routing Table Report
cscora at frr.nsrc.org
Thu Sep 22 20:10:39 UTC 2022
IPv4 R&E Routing Table Report 20:10 GMT Thu 22 Sep, 2022
IPv4 BGP Table (R&E) as seen at CERNET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/CERNET/
Analysis Summary
----------------
BGP routing table entries examined: 17140
Prefixes after maximum aggregation (per Origin AS): 9990
Deaggregation factor: 1.72
Unique aggregates announced (without unneeded subnets): 11212
Number of IPv4 prefixes with a valid ROA: 4215
Number of IPv4 prefixes with an invalid ROA: 36
Number of IPv4 prefixes with no ROA: 12889
Total ASes present in the Internet Routing Table: 2657
Prefixes per ASN: 6.45
Origin-only ASes present in the Internet Routing Table: 2299
Origin ASes announcing only one prefix: 1044
Transit ASes present in the Internet Routing Table: 358
Transit-only ASes present in the Internet Routing Table: 60
Paths with bogon ASNs present in the IPv4 Routing Table: 1
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 15
Max AS path prepend of ASN ( 10497) 11
Prefixes from unregistered ASNs in the Routing Table: 6
Number of instances of unregistered ASNs: 6
Number of 32-bit ASNs allocated by the RIRs: 40209
Number of 32-bit ASNs visible in the Routing Table: 613
Prefixes from 32-bit ASNs in the Routing Table: 1742
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 1
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 196744320
Equivalent to 11 /8s, 186 /16s and 20 /24s
Percentage of available address space announced: 5.3
Percentage of allocated address space announced: 5.3
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: 1995
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3982
Total APNIC prefixes after maximum aggregation: 2165
APNIC Deaggregation factor: 1.84
Prefixes being announced from the APNIC address blocks: 3983
Unique aggregates announced from the APNIC address blocks: 2554
APNIC Region origin ASes present in the Internet Routing Table: 565
APNIC Prefixes per ASN: 7.05
APNIC Region origin ASes announcing only one prefix: 252
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 221
Number of APNIC addresses announced to Internet: 45210624
Equivalent to 2 /8s, 177 /16s and 220 /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: 7282
Total ARIN prefixes after maximum aggregation: 4208
ARIN Deaggregation factor: 1.73
Prefixes being announced from the ARIN address blocks: 7294
Unique aggregates announced from the ARIN address blocks: 4729
ARIN Region origin ASes present in the Internet Routing Table: 1168
ARIN Prefixes per ASN: 6.24
ARIN Region origin ASes announcing only one prefix: 426
ARIN Region transit ASes present in the Internet Routing Table: 157
Average ARIN Region AS path length visible: 4.5
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 179
Number of ARIN addresses announced to Internet: 87002624
Equivalent to 5 /8s, 47 /16s and 142 /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: 3531
Total RIPE prefixes after maximum aggregation: 2847
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3522
Unique aggregates announced from the RIPE address blocks: 2855
RIPE Region origin ASes present in the Internet Routing Table: 672
RIPE Prefixes per ASN: 5.24
RIPE Region origin ASes announcing only one prefix: 298
RIPE Region transit ASes present in the Internet Routing Table: 95
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 137
Number of RIPE addresses announced to Internet: 57918592
Equivalent to 3 /8s, 115 /16s and 196 /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: 1428
Total LACNIC prefixes after maximum aggregation: 574
LACNIC Deaggregation factor: 2.49
Prefixes being announced from the LACNIC address blocks: 1428
Unique aggregates announced from the LACNIC address blocks: 791
LACNIC Region origin ASes present in the Internet Routing Table: 159
LACNIC Prefixes per ASN: 8.98
LACNIC Region origin ASes announcing only one prefix: 60
LACNIC Region transit ASes present in the Internet Routing Table: 24
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 67
Number of LACNIC addresses announced to Internet: 4150528
Equivalent to 0 /8s, 63 /16s and 85 /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: 911
Total AfriNIC prefixes after maximum aggregation: 190
AfriNIC Deaggregation factor: 4.79
Prefixes being announced from the AfriNIC address blocks: 911
Unique aggregates announced from the AfriNIC address blocks: 281
AfriNIC Region origin ASes present in the Internet Routing Table: 27
AfriNIC Prefixes per ASN: 33.74
AfriNIC Region origin ASes announcing only one prefix: 8
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 9
Number of AfriNIC addresses announced to Internet: 2461440
Equivalent to 0 /8s, 37 /16s and 143 /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 568 2156 456 SINET-AS Research Organization of Infor
1237 187 74 135 KREONET-AS-KR KISTI, KR
7575 175 329 121 AARNET-AS-AP Australian Academic and Re
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
55824 115 18 11 NKN-CORE-NW NKN Core Network, IN
4538 109 4159 68 ERX-CERNET-BKB China Education and Rese
4621 78 37 10 UNINET-AS-AP UNINET-, TH
4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
2697 54 3 32 ERX-ERNET-AS Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 203 178 152 RISQ-AS, CA
2152 150 507 91 CSUNET-NW, US
18558 137 18 4 NETBLK-RCOEK, US
5786 126 16 1 UPRENET, PR
23024 114 7 17 OCDE, US
2920 108 34 7 LACOE, US
32531 90 6 60 FORDHAM-UNIVERSITY, US
21976 85 51 18 NJEDGE-NET, US
1736 81 16 1 MU-AS, US
3 79 496 16 MIT-GATEWAYS, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 281 1935 249 DFN Verein zur Foerderung eines Deutsch
786 186 1775 183 JANET Jisc Services Limited, GB
8895 139 24 4 ISU Internet Services Unit ISU, SA
559 115 550 106 SWITCH Peering requests: peering at switch
1103 100 1520 87 SURFNET-NL SURFnet, The Netherlands, NL
2614 95 27 75 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
553 73 449 73 BELWUE BelWue-Koordination, DE
2200 64 599 59 FR-RENATER Reseau National de telecommu
1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 157 208 43 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 96 24 54 Red Universitaria Nacional, CL
1251 58 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo
4270 44 16 1 Red de Interconexion Universitaria, AR
61468 42 3 15 CEDIA, EC
28571 40 40 18 UNIVERSIDADE DE SAO PAULO, BR
19611 37 17 2 Associacao Antonio Vieira - Unisinos, B
28614 37 2 2 Fundacao Universidade Regional de Blume
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 375 319 73 TENET-1, ZA
36914 245 82 3 KENET-AS, KE
2561 67 4 32 EUN, EG
8094 48 48 15 PUKNET, ZA
327687 38 28 3 RENU, UG
327700 30 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37182 19 1 14 TERNET, TZ
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 568 2156 456 SINET-AS Research Organization of Infor
2018 375 319 73 TENET-1, ZA
680 281 1935 249 DFN Verein zur Foerderung eines Deutsch
36914 245 82 3 KENET-AS, KE
376 203 178 152 RISQ-AS, CA
1237 187 74 135 KREONET-AS-KR KISTI, KR
786 186 1775 183 JANET Jisc Services Limited, GB
7575 175 329 121 AARNET-AS-AP Australian Academic and Re
58647 175 18 2 KAGAWAU-AS Kagawa University, JP
1916 157 208 43 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
2018 375 302 TENET-1, ZA
36914 245 242 KENET-AS, KE
58647 175 173 KAGAWAU-AS Kagawa University, JP
8895 139 135 ISU Internet Services Unit ISU, SA
18558 137 133 NETBLK-RCOEK, US
5786 126 125 UPRENET, PR
1916 157 114 Rede Nacional de Ensino e Pesquisa, BR
55824 115 104 NKN-CORE-NW NKN Core Network, IN
2920 108 101 LACOE, US
23024 114 97 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65216 PRIVATE 91.196.28.0/22 199713 MLL-AS, GB
22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US
33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US
19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US
395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-badAS
Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------
Prefix Origin AS Description
192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-spar
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 UNASSIGNED
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL
192.88.99.0/24 Transit: 20965 GEANT The GEANT IP Service, NL
Complete listing at https://bgp.nsrc.org/REN/CERNET/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 /14:31 /15:117 /16:1922 /17:393 /18:428
/19:525 /20:778 /21:797 /22:1327 /23:1401 /24:9383
/25:3 /26:3 /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 232 245 KENET-AS, KE
8895 134 139 ISU Internet Services Unit ISU, SA
23024 53 114 OCDE, US
32440 33 48 LONI, US
46115 32 35 LUTHER, US
25977 31 45 HCCS, US
28614 31 37 Fundacao Universidade Regional de Blumenau, BR
200521 31 52 SEAP-AGE, ES
263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/CERNET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:15 8:2 12:1 14:86 18:43
23:6 24:3 31:7 35:4 38:9 40:1
41:126 44:5 45:34 46:5 47:1 49:10
50:1 52:1 59:19 61:3 62:9 63:33
64:49 65:1 66:34 67:43 68:8 69:21
70:2 71:1 72:7 74:50 76:37 77:7
78:3 79:10 80:18 81:28 82:7 83:6
84:9 85:43 86:5 87:1 88:1 89:10
91:46 92:1 93:4 94:4 95:4 96:5
97:1 98:2 101:4 102:4 103:312 104:74
108:8 109:10 110:4 111:16 114:23 116:6
117:61 118:32 119:4 121:18 122:8 123:8
125:1 128:86 129:38 130:90 131:76 132:60
133:146 134:93 136:128 137:75 138:11 139:5
140:40 141:1 142:39 143:31 144:23 145:2
146:130 147:57 148:191 149:12 150:130 151:6
152:75 153:14 154:28 155:51 156:66 157:23
158:41 159:19 160:26 161:20 162:19 163:71
164:10 165:51 166:1 167:16 168:119 169:10
170:56 172:2 173:7 175:30 176:8 177:11
179:10 180:17 181:1 182:4 184:2 185:44
186:3 187:19 188:13 189:3 190:34 191:36
192:1265 193:311 194:143 195:92 196:161 197:147
198:439 199:237 200:229 201:38 202:562 203:421
204:338 205:121 206:184 207:165 208:66 209:117
210:111 211:13 212:174 213:5 216:86 217:11
218:3 219:7 220:17 222:2
End of report
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